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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html lang="en">
<HEAD>
<TITLE>Changes</TITLE>
<link rel="stylesheet" href="style/default.css" type="text/css">
<link rel="stylesheet" href="https://www.w3.org/StyleSheets/TR/W3C-ED.css" type="text/css">
<link rel="prev" href="refs.html">
<link rel="next" href="sample.html">
<link rel="contents" href="cover.html#minitoc">
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</HEAD>
<BODY>
<div class="navbar">
<p><a href="refs.html">previous</a>
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<hr class="navbar">
<H1><a name="q21.0">Appendix C. Changes</a></H1>
<div class="subtoc">
<p><strong>Contents</strong>
<ul class="toc">
<li class="tocline2"><a href="changes.html#new" class="tocxref">C.1 Additional property values</a>
<ul class="toc">
<li class="tocline3"><a href="changes.html#q21.2" class="tocxref">C.1.1 Section 4.3.6 Colors</a>
<li class="tocline3"><a href="changes.html#q21.3" class="tocxref">C.1.2 Section 9.2.4 The 'display' property</a>
<li class="tocline3"><a href="changes.html#q21.4" class="tocxref">C.1.3 Section 12.2 The 'content' property</a>
<li class="tocline3"><a href="changes.html#q21.5" class="tocxref">C.1.4 Section 16.6 White space: the 'white-space' property</a>
<li class="tocline3"><a href="changes.html#q21.6" class="tocxref">C.1.5 Section 18.1 Cursors: the 'cursor' property</a>
</ul>
<li class="tocline2"><a href="changes.html#changes" class="tocxref">C.2 Changes</a>
<ul class="toc">
<li class="tocline3"><a href="changes.html#q21.8" class="tocxref">C.2.1 Section 1.1 CSS 2.1 vs CSS 2</a>
<li class="tocline3"><a href="changes.html#q21.9" class="tocxref">C.2.2 Section 1.2 Reading the specification</a>
<li class="tocline3"><a href="changes.html#q21.10" class="tocxref">C.2.3 Section 1.3 How the specification is organized</a>
<li class="tocline3"><a href="changes.html#q21.11" class="tocxref">C.2.4 Section 1.4.2.1 Value</a>
<li class="tocline3"><a href="changes.html#q21.12" class="tocxref">C.2.5 Section 1.4.2.6 Media groups</a>
<li class="tocline3"><a href="changes.html#q21.13" class="tocxref">C.2.6 Section 1.4.2.7 Computed value</a>
<li class="tocline3"><a href="changes.html#q21.14" class="tocxref">C.2.7 Section 1.4.4 Notes and examples</a>
<li class="tocline3"><a href="changes.html#q21.15" class="tocxref">C.2.8 Section 1.5 Acknowledgments</a>
<li class="tocline3"><a href="changes.html#q21.16" class="tocxref">C.2.9 Section 3.2 Conformance</a>
<li class="tocline3"><a href="changes.html#q21.17" class="tocxref">C.2.10 Section 3.3 Error Conditions</a>
<li class="tocline3"><a href="changes.html#q21.18" class="tocxref">C.2.11 Section 4.1.1 Tokenization</a>
<li class="tocline3"><a href="changes.html#q21.19" class="tocxref">C.2.12 Section 4.1.3 Characters and case</a>
<li class="tocline3"><a href="changes.html#q21.20" class="tocxref">C.2.13 Section 4.2 Rules for handling parsing errors</a>
<li class="tocline3"><a href="changes.html#q21.21" class="tocxref">C.2.14 Section 4.3 Values</a>
<li class="tocline3"><a href="changes.html#q21.22" class="tocxref">C.2.15 Section 4.3.2 Lengths</a>
<li class="tocline3"><a href="changes.html#q21.23" class="tocxref">C.2.16 Section 4.3.4 URLs and URIs</a>
<li class="tocline3"><a href="changes.html#q21.24" class="tocxref">C.2.17 Section 4.3.5 Counters</a>
<li class="tocline3"><a href="changes.html#q21.25" class="tocxref">C.2.18 Section 4.3.6 Colors</a>
<li class="tocline3"><a href="changes.html#q21.26" class="tocxref">C.2.19 Section 4.3.8 Unsupported Values</a>
<li class="tocline3"><a href="changes.html#q21.27" class="tocxref">C.2.20 Section 4.4 CSS style sheet representation</a>
<li class="tocline3"><a href="changes.html#q21.28" class="tocxref">C.2.21 Section 5.8.1 Matching attributes and attribute values</a>
<li class="tocline3"><a href="changes.html#q21.29" class="tocxref">C.2.22 Section 5.8.3 Class selectors</a>
<li class="tocline3"><a href="changes.html#q21.30" class="tocxref">C.2.23 Section 5.9 ID selectors</a>
<li class="tocline3"><a href="changes.html#q21.31" class="tocxref">C.2.24 Section 5.10 Pseudo-elements and pseudo-classes</a>
<li class="tocline3"><a href="changes.html#q21.32" class="tocxref">C.2.25 Section 5.11.2 The link pseudo-classes: :link and :visited</a>
<li class="tocline3"><a href="changes.html#q21.33" class="tocxref">C.2.26 Section 5.11.4 The language pseudo-class: :lang</a>
<li class="tocline3"><a href="changes.html#q21.34" class="tocxref">C.2.27 Section 5.12.1 The :first-line pseudo-element</a>
<li class="tocline3"><a href="changes.html#q21.35" class="tocxref">C.2.28 Section 5.12.2 The :first-letter pseudo-element</a>
<li class="tocline3"><a href="changes.html#q21.36" class="tocxref">C.2.29 Section 6.1 Specified, computed, and actual values</a>
<li class="tocline3"><a href="changes.html#q21.37" class="tocxref">C.2.30 Section 6.4.1 Cascading order</a>
<li class="tocline3"><a href="changes.html#q21.38" class="tocxref">C.2.31 Section 6.4.3 Calculating a selector's specificity</a>
<li class="tocline3"><a href="changes.html#q21.39" class="tocxref">C.2.32 Section 6.4.4 Precedence of non-CSS presentational hints</a>
<li class="tocline3"><a href="changes.html#q21.40" class="tocxref">C.2.33 Section 7.3 Recognized Media Types</a>
<li class="tocline3"><a href="changes.html#q21.41" class="tocxref">C.2.34 Section 7.3.1 Media Groups</a>
<li class="tocline3"><a href="changes.html#q21.42" class="tocxref">C.2.35 Section 8.3 Margin properties</a>
<li class="tocline3"><a href="changes.html#q21.43" class="tocxref">C.2.36 Section 8.3.1 Collapsing margins</a>
<li class="tocline3"><a href="changes.html#q21.44" class="tocxref">C.2.37 Section 8.4 Padding properties</a>
<li class="tocline3"><a href="changes.html#q21.45" class="tocxref">C.2.38 Section 8.5.2 Border color</a>
<li class="tocline3"><a href="changes.html#q21.46" class="tocxref">C.2.39 Section 8.5.3 Border style</a>
<li class="tocline3"><a href="changes.html#q21.47" class="tocxref">C.2.40 Section 8.6 The box model for inline elements in bidirectional context</a>
<li class="tocline3"><a href="changes.html#q21.48" class="tocxref">C.2.41 Section 9.1.2 Containing blocks</a>
<li class="tocline3"><a href="changes.html#q21.49" class="tocxref">C.2.42 Section 9.2.1.1 Anonymous block boxes</a>
<li class="tocline3"><a href="changes.html#q21.50" class="tocxref">C.2.43 Section 9.2.2.1 Anonymous inline boxes</a>
<li class="tocline3"><a href="changes.html#q21.51" class="tocxref">C.2.44 Section 9.2.3 Run-in boxes</a>
<li class="tocline3"><a href="changes.html#q21.52" class="tocxref">C.2.45 Section 9.2.4 The 'display' property</a>
<li class="tocline3"><a href="changes.html#q21.53" class="tocxref">C.2.46 Section 9.3.1 Choosing a positioning scheme</a>
<li class="tocline3"><a href="changes.html#q21.54" class="tocxref">C.2.47 Section 9.3.2 Box offsets</a>
<li class="tocline3"><a href="changes.html#q21.55" class="tocxref">C.2.48 Section 9.4.1 Block formatting contexts</a>
<li class="tocline3"><a href="changes.html#q21.56" class="tocxref">C.2.49 Section 9.4.2 Inline formatting context</a>
<li class="tocline3"><a href="changes.html#q21.57" class="tocxref">C.2.50 Section 9.4.3 Relative positioning</a>
<li class="tocline3"><a href="changes.html#q21.58" class="tocxref">C.2.51 Section 9.5 Floats</a>
<li class="tocline3"><a href="changes.html#q21.59" class="tocxref">C.2.52 Section 9.5.1 Positioning the float</a>
<li class="tocline3"><a href="changes.html#q21.60" class="tocxref">C.2.53 Section 9.5.2 Controlling flow next to floats</a>
<li class="tocline3"><a href="changes.html#q21.61" class="tocxref">C.2.54 Section 9.7 Relationships between 'display', 'position', and 'float'</a>
<li class="tocline3"><a href="changes.html#q21.62" class="tocxref">C.2.55 Section 9.9 Layered presentation</a>
<li class="tocline3"><a href="changes.html#q21.63" class="tocxref">C.2.56 Section 9.10 Text direction</a>
<li class="tocline3"><a href="changes.html#q21.64" class="tocxref">C.2.57 Chapter 10 Visual formatting model details</a>
<li class="tocline3"><a href="changes.html#q21.65" class="tocxref">C.2.58 Section 10.1 Definition of "containing block"</a>
<li class="tocline3"><a href="changes.html#q21.66" class="tocxref">C.2.59 Section 10.2 Content width</a>
<li class="tocline3"><a href="changes.html#q21.67" class="tocxref">C.2.60 Section 10.3 Calculating widths and margins</a>
<li class="tocline3"><a href="changes.html#q21.68" class="tocxref">C.2.61 Section 10.3.2 Inline, replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.69" class="tocxref">C.2.62 Section 10.3.3 Block-level, non-replaced elements in normal flow</a>
<li class="tocline3"><a href="changes.html#q21.70" class="tocxref">C.2.63 Section 10.3.4 Block-level, replaced elements in normal flow</a>
<li class="tocline3"><a href="changes.html#q21.71" class="tocxref">C.2.64 Section 10.3.5 Floating, non-replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.72" class="tocxref">C.2.65 Section 10.3.6 Floating, replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.73" class="tocxref">C.2.66 Section 10.3.7 Absolutely positioned, non-replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.74" class="tocxref">C.2.67 Section 10.3.8 Absolutely positioned, replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.75" class="tocxref">C.2.68 Section 10.4 Minimum and maximum widths</a>
<li class="tocline3"><a href="changes.html#q21.76" class="tocxref">C.2.69 Section 10.5 Content height</a>
<li class="tocline3"><a href="changes.html#q21.77" class="tocxref">C.2.70 Section 10.6 Calculating heights and margins</a>
<li class="tocline3"><a href="changes.html#q21.78" class="tocxref">C.2.71 Section 10.6.1 Inline, non-replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.79" class="tocxref">C.2.72 Section 10.6.2 Inline replaced elements, block-level replaced elements in normal flow, 'inline-block' replaced elements in normal flow and floating replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.80" class="tocxref">C.2.73 Section 10.6.3 Block-level non-replaced elements in normal flow when 'overflow' computes to 'visible'</a>
<li class="tocline3"><a href="changes.html#q21.81" class="tocxref">C.2.74 Section 10.6.4 Absolutely positioned, non-replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.82" class="tocxref">C.2.75 Section 10.6.5 Absolutely positioned, replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.83" class="tocxref">C.2.76 Section 10.7 Minimum and maximum heights</a>
<li class="tocline3"><a href="changes.html#q21.84" class="tocxref">C.2.77 Section 10.8 Line height calculations</a>
<li class="tocline3"><a href="changes.html#q21.85" class="tocxref">C.2.78 Section 10.8.1 Leading and half-leading</a>
<li class="tocline3"><a href="changes.html#q21.86" class="tocxref">C.2.79 Section 11.1 Overflow and clipping</a>
<li class="tocline3"><a href="changes.html#q21.87" class="tocxref">C.2.80 Section 11.1.1 Overflow</a>
<li class="tocline3"><a href="changes.html#q21.88" class="tocxref">C.2.81 Section 11.1.2 Clipping: the 'clip' property</a>
<li class="tocline3"><a href="changes.html#q21.89" class="tocxref">C.2.82 Section 11.2 Visibility</a>
<li class="tocline3"><a href="changes.html#q21.90" class="tocxref">C.2.83 Chapter 12 Generated content, automatic numbering, and lists</a>
<li class="tocline3"><a href="changes.html#q21.91" class="tocxref">C.2.84 Section 12.1 The :before and :after pseudo-elements</a>
<li class="tocline3"><a href="changes.html#q21.92" class="tocxref">C.2.85 Section 12.2 The 'content' property</a>
<li class="tocline3"><a href="changes.html#q21.93" class="tocxref">C.2.86 Section 12.3.2 Inserting quotes with the 'content' property</a>
<li class="tocline3"><a href="changes.html#q21.94" class="tocxref">C.2.87 Section 12.4 Automatic counters and numbering</a>
<li class="tocline3"><a href="changes.html#q21.95" class="tocxref">C.2.88 Section 12.4.1 Nested counters and scope</a>
<li class="tocline3"><a href="changes.html#q21.96" class="tocxref">C.2.89 Section 12.5 Lists</a>
<li class="tocline3"><a href="changes.html#q21.97" class="tocxref">C.2.90 Section 12.5.1 Lists</a>
<li class="tocline3"><a href="changes.html#q21.98" class="tocxref">C.2.91 Chapter 13 Paged media</a>
<li class="tocline3"><a href="changes.html#q21.99" class="tocxref">C.2.92 Section 13.2.2 Page selectors</a>
<li class="tocline3"><a href="changes.html#q21.100" class="tocxref">C.2.93 Section 13.3.1 Page break properties</a>
<li class="tocline3"><a href="changes.html#q21.101" class="tocxref">C.2.94 Section 13.3.3 Allowed page breaks</a>
<li class="tocline3"><a href="changes.html#q21.102" class="tocxref">C.2.95 Section 14.2.1 Background properties</a>
<li class="tocline3"><a href="changes.html#q21.103" class="tocxref">C.2.96 Section 14.3 Gamma correction</a>
<li class="tocline3"><a href="changes.html#q21.104" class="tocxref">C.2.97 Chapter 15 Fonts</a>
<li class="tocline3"><a href="changes.html#q21.105" class="tocxref">C.2.98 Section 15.2 Font matching algorithm</a>
<li class="tocline3"><a href="changes.html#q21.106" class="tocxref">C.2.99 Section 15.2.2 Font family</a>
<li class="tocline3"><a href="changes.html#q21.107" class="tocxref">C.2.100 Section 15.5 Small-caps</a>
<li class="tocline3"><a href="changes.html#q21.108" class="tocxref">C.2.101 Section 15.6 Font boldness</a>
<li class="tocline3"><a href="changes.html#q21.109" class="tocxref">C.2.102 Section 15.7 Font size</a>
<li class="tocline3"><a href="changes.html#q21.110" class="tocxref">C.2.103 Chapter 16 Text</a>
<li class="tocline3"><a href="changes.html#q21.111" class="tocxref">C.2.104 Section 16.2 Alignment</a>
<li class="tocline3"><a href="changes.html#q21.112" class="tocxref">C.2.105 Section 16.3.1 Underlining, over lining, striking, and blinking</a>
<li class="tocline3"><a href="changes.html#q21.113" class="tocxref">C.2.106 Section 16.4 Letter and word spacing</a>
<li class="tocline3"><a href="changes.html#q21.114" class="tocxref">C.2.107 Section 16.5 Capitalization</a>
<li class="tocline3"><a href="changes.html#q21.115" class="tocxref">C.2.108 Section 16.6 White space</a>
<li class="tocline3"><a href="changes.html#q21.116" class="tocxref">C.2.109 Chapter 17 Tables</a>
<li class="tocline3"><a href="changes.html#q21.117" class="tocxref">C.2.110 Section 17.2 The CSS table model</a>
<li class="tocline3"><a href="changes.html#q21.118" class="tocxref">C.2.111 Section 17.2.1 Anonymous table objects</a>
<li class="tocline3"><a href="changes.html#q21.119" class="tocxref">C.2.112 Section 17.4 Tables in the visual formatting model</a>
<li class="tocline3"><a href="changes.html#q21.120" class="tocxref">C.2.113 Section 17.4.1 Caption position and alignment</a>
<li class="tocline3"><a href="changes.html#q21.121" class="tocxref">C.2.114 Section 17.5 Visual layout of table contents</a>
<li class="tocline3"><a href="changes.html#q21.122" class="tocxref">C.2.115 Section 17.5.1 Table layers and transparency</a>
<li class="tocline3"><a href="changes.html#q21.123" class="tocxref">C.2.116 Section 17.5.2.1 Fixed table layout</a>
<li class="tocline3"><a href="changes.html#q21.124" class="tocxref">C.2.117 Section 17.5.2.2 Automatic table layout</a>
<li class="tocline3"><a href="changes.html#q21.125" class="tocxref">C.2.118 Section 17.5.3 Table height algorithms</a>
<li class="tocline3"><a href="changes.html#q21.126" class="tocxref">C.2.119 Section 17.5.4 Horizontal alignment in a column</a>
<li class="tocline3"><a href="changes.html#q21.127" class="tocxref">C.2.120 Section 17.6 Borders</a>
<li class="tocline3"><a href="changes.html#q21.128" class="tocxref">C.2.121 Section 17.6.1 The separated borders model</a>
<li class="tocline3"><a href="changes.html#q21.129" class="tocxref">C.2.122 Section 17.6.1.1 Borders and Backgrounds around empty cells</a>
<li class="tocline3"><a href="changes.html#q21.130" class="tocxref">C.2.123 Section 17.6.2 The collapsing border model</a>
<li class="tocline3"><a href="changes.html#q21.131" class="tocxref">C.2.124 Section 17.6.2.1 Border conflict resolution</a>
<li class="tocline3"><a href="changes.html#q21.132" class="tocxref">C.2.125 Section 18.1 Cursors: the 'cursor' property</a>
<li class="tocline3"><a href="changes.html#q21.133" class="tocxref">C.2.126 Section 18.4 Dynamic outlines</a>
<li class="tocline3"><a href="changes.html#q21.134" class="tocxref">C.2.127 Chapter 12 Generated content, automatic numbering, and lists</a>
<li class="tocline3"><a href="changes.html#q21.135" class="tocxref">C.2.128 Appendix A. Aural style sheets</a>
<li class="tocline3"><a href="changes.html#q21.136" class="tocxref">C.2.129 Appendix A Section 5 Pause properties</a>
<li class="tocline3"><a href="changes.html#q21.137" class="tocxref">C.2.130 Appendix A Section 6 Cue properties</a>
<li class="tocline3"><a href="changes.html#q21.138" class="tocxref">C.2.131 Appendix A Section 7 Mixing properties</a>
<li class="tocline3"><a href="changes.html#q21.139" class="tocxref">C.2.132 Appendix B Bibliography</a>
<li class="tocline3"><a href="changes.html#q21.140" class="tocxref">C.2.133 Other</a>
</ul>
<li class="tocline2"><a href="changes.html#known-errors" class="tocxref">C.3 Errors</a>
<ul class="toc">
<li class="tocline3"><a href="changes.html#q21.142" class="tocxref">C.3.1 Shorthand properties</a>
<li class="tocline3"><a href="changes.html#q21.143" class="tocxref">C.3.2 Applies to</a>
<li class="tocline3"><a href="changes.html#q21.144" class="tocxref">C.3.3 Section 4.1.1 (and G2)</a>
<li class="tocline3"><a href="changes.html#q21.145" class="tocxref">C.3.4 Section 4.1.3 Characters and case</a>
<li class="tocline3"><a href="changes.html#q21.146" class="tocxref">C.3.5 Section 4.3 (Double sign problem)</a>
<li class="tocline3"><a href="changes.html#q21.147" class="tocxref">C.3.6 Section 4.3.2 Lengths</a>
<li class="tocline3"><a href="changes.html#q21.148" class="tocxref">C.3.7 Section 4.3.3 Percentages</a>
<li class="tocline3"><a href="changes.html#q21.149" class="tocxref">C.3.8 Section 4.3.4 URLs and URIs</a>
<li class="tocline3"><a href="changes.html#q21.150" class="tocxref">C.3.9 Section 4.3.5 Counters</a>
<li class="tocline3"><a href="changes.html#q21.151" class="tocxref">C.3.10 Section 4.3.6 Colors</a>
<li class="tocline3"><a href="changes.html#q21.152" class="tocxref">C.3.11 Section 4.3.7 Strings</a>
<li class="tocline3"><a href="changes.html#q21.153" class="tocxref">C.3.12 Section 5.10 Pseudo-elements and pseudo-classes</a>
<li class="tocline3"><a href="changes.html#q21.154" class="tocxref">C.3.13 Section 6.4 The cascade</a>
<li class="tocline3"><a href="changes.html#q21.155" class="tocxref">C.3.14 Section 8.1 Box Dimensions</a>
<li class="tocline3"><a href="changes.html#q21.156" class="tocxref">C.3.15 Section 8.2 Example of margins, padding, and borders</a>
<li class="tocline3"><a href="changes.html#q21.157" class="tocxref">C.3.16 Section 8.5.4 Border shorthand properties</a>
<li class="tocline3"><a href="changes.html#q21.158" class="tocxref">C.3.17 Section 9.2.1 Block-level elements and block boxes</a>
<li class="tocline3"><a href="changes.html#q21.159" class="tocxref">C.3.18 Section 9.3.1 Choosing a positioning scheme</a>
<li class="tocline3"><a href="changes.html#q21.160" class="tocxref">C.3.19 Section 9.3.2 Box offsets</a>
<li class="tocline3"><a href="changes.html#q21.161" class="tocxref">C.3.20 Section 9.4.1 Block formatting contexts</a>
<li class="tocline3"><a href="changes.html#q21.162" class="tocxref">C.3.21 Section 9.4.2 Inline formatting context</a>
<li class="tocline3"><a href="changes.html#q21.163" class="tocxref">C.3.22 Section 9.4.3 Relative positioning</a>
<li class="tocline3"><a href="changes.html#q21.164" class="tocxref">C.3.23 Section 9.5 Floats</a>
<li class="tocline3"><a href="changes.html#q21.165" class="tocxref">C.3.24 Section 9.5.1 Positioning the float</a>
<li class="tocline3"><a href="changes.html#q21.166" class="tocxref">C.3.25 Section 9.5.2 Controlling flow next to floats</a>
<li class="tocline3"><a href="changes.html#q21.167" class="tocxref">C.3.26 Section 9.6 Absolute positioning</a>
<li class="tocline3"><a href="changes.html#q21.168" class="tocxref">C.3.27 Section 9.7 Relationships between 'display', 'position', and 'float'</a>
<li class="tocline3"><a href="changes.html#q21.169" class="tocxref">C.3.28 Section 9.10 Text direction</a>
<li class="tocline3"><a href="changes.html#q21.170" class="tocxref">C.3.29 Section 10.1 Definition of "containing block"</a>
<li class="tocline3"><a href="changes.html#q21.171" class="tocxref">C.3.30 Section 10.3.3 Block-level, non-replaced elements in normal flow</a>
<li class="tocline3"><a href="changes.html#q21.172" class="tocxref">C.3.31 Section 10.4 Minimum and maximum widths</a>
<li class="tocline3"><a href="changes.html#q21.173" class="tocxref">C.3.32 Section 10.6.3 Block-level non-replaced elements in normal flow when 'overflow' computes to 'visible'</a>
<li class="tocline3"><a href="changes.html#q21.174" class="tocxref">C.3.33 Section 10.7 Minimum and maximum heights</a>
<li class="tocline3"><a href="changes.html#q21.175" class="tocxref">C.3.34 Section 11.1.1 Overflow</a>
<li class="tocline3"><a href="changes.html#q21.176" class="tocxref">C.3.35 Section 11.1.2 Clipping: the 'clip' property</a>
<li class="tocline3"><a href="changes.html#q21.177" class="tocxref">C.3.36 Section 11.2 Visibility</a>
<li class="tocline3"><a href="changes.html#q21.178" class="tocxref">C.3.37 Section 12.4.2 Counter styles</a>
<li class="tocline3"><a href="changes.html#q21.179" class="tocxref">C.3.38 Section 12.6.2 Lists</a>
<li class="tocline3"><a href="changes.html#q21.180" class="tocxref">C.3.39 Section 14.2 The background</a>
<li class="tocline3"><a href="changes.html#q21.181" class="tocxref">C.3.40 Section 14.2.1 Background properties</a>
<li class="tocline3"><a href="changes.html#q21.182" class="tocxref">C.3.41 Section 15.2 Font matching algorithm</a>
<li class="tocline3"><a href="changes.html#q21.183" class="tocxref">C.3.42 Section 15.7 Font size</a>
<li class="tocline3"><a href="changes.html#q21.184" class="tocxref">C.3.43 Section 16.1 Indentation</a>
<li class="tocline3"><a href="changes.html#q21.185" class="tocxref">C.3.44 Section 16.2 Alignment</a>
<li class="tocline3"><a href="changes.html#q21.186" class="tocxref">C.3.45 Section 17.2 The CSS table model</a>
<li class="tocline3"><a href="changes.html#q21.187" class="tocxref">C.3.46 Section 17.2.1 Anonymous table objects </a>
<li class="tocline3"><a href="changes.html#q21.188" class="tocxref">C.3.47 Section 17.4 Tables in the visual formatting model</a>
<li class="tocline3"><a href="changes.html#q21.189" class="tocxref">C.3.48 Section 17.5 Visual layout of table contents</a>
<li class="tocline3"><a href="changes.html#q21.190" class="tocxref">C.3.49 Section 17.5.1 Table layers and transparency</a>
<li class="tocline3"><a href="changes.html#q21.191" class="tocxref">C.3.50 Section 17.6.1 The separated borders model</a>
<li class="tocline3"><a href="changes.html#q21.192" class="tocxref">C.3.51 Section 18.2 System Colors</a>
<li class="tocline3"><a href="changes.html#q21.193" class="tocxref">C.3.52 Section E.2 Painting order</a>
</ul>
<li class="tocline2"><a href="changes.html#clarifications" class="tocxref">C.4 Clarifications</a>
<ul class="toc">
<li class="tocline3"><a href="changes.html#q21.195" class="tocxref">C.4.1 Section 2.1 A brief CSS 2.1 tutorial for HTML</a>
<li class="tocline3"><a href="changes.html#q21.196" class="tocxref">C.4.2 Section 2.2 A brief CSS 2.1 tutorial for XML</a>
<li class="tocline3"><a href="changes.html#q21.197" class="tocxref">C.4.3 Section 2.3 The CSS 2.1 processing model</a>
<li class="tocline3"><a href="changes.html#q21.198" class="tocxref">C.4.4 Section 3.1 Definitions</a>
<li class="tocline3"><a href="changes.html#q21.199" class="tocxref">C.4.5 Section 4.1 Syntax</a>
<li class="tocline3"><a href="changes.html#q21.200" class="tocxref">C.4.6 Section 4.1.1 Tokenization</a>
<li class="tocline3"><a href="changes.html#q21.201" class="tocxref">C.4.7 Section 4.1.3 Characters and case</a>
<li class="tocline3"><a href="changes.html#q21.202" class="tocxref">C.4.8 Section 4.1.7 Rule sets, declaration blocks, and selectors</a>
<li class="tocline3"><a href="changes.html#q21.203" class="tocxref">C.4.9 Section 4.2 Rules for handling parsing errors</a>
<li class="tocline3"><a href="changes.html#q21.204" class="tocxref">C.4.10 Section 4.3.1 Integers and real numbers</a>
<li class="tocline3"><a href="changes.html#q21.205" class="tocxref">C.4.11 Section 4.3.2 Lengths</a>
<li class="tocline3"><a href="changes.html#q21.206" class="tocxref">C.4.12 Section 4.3.4 URLs and URIs</a>
<li class="tocline3"><a href="changes.html#q21.207" class="tocxref">C.4.13 Section 5.1 Pattern matching</a>
<li class="tocline3"><a href="changes.html#q21.208" class="tocxref">C.4.14 Section 5.7 Adjacent sibling selectors</a>
<li class="tocline3"><a href="changes.html#q21.209" class="tocxref">C.4.15 Section 5.8.1 Matching attributes and attribute values</a>
<li class="tocline3"><a href="changes.html#q21.210" class="tocxref">C.4.16 Section 5.8.2 Default attribute values in DTDs</a>
<li class="tocline3"><a href="changes.html#q21.211" class="tocxref">C.4.17 Section 5.9 ID selectors</a>
<li class="tocline3"><a href="changes.html#q21.212" class="tocxref">C.4.18 Section 5.11.3 The dynamic pseudo-classes: :hover, :active, and :focus</a>
<li class="tocline3"><a href="changes.html#q21.213" class="tocxref">C.4.19 Section 5.11.4 The language pseudo-class: :lang</a>
<li class="tocline3"><a href="changes.html#q21.214" class="tocxref">C.4.20 Section 5.12.2 The :first-letter pseudo-element</a>
<li class="tocline3"><a href="changes.html#q21.215" class="tocxref">C.4.21 Section 6.2 Inheritance</a>
<li class="tocline3"><a href="changes.html#q21.216" class="tocxref">C.4.22 Section 6.2.1 The 'inherit' value</a>
<li class="tocline3"><a href="changes.html#q21.217" class="tocxref">C.4.23 Section 6.3 The @import rule</a>
<li class="tocline3"><a href="changes.html#q21.218" class="tocxref">C.4.24 Section 6.4 The Cascade</a>
<li class="tocline3"><a href="changes.html#q21.219" class="tocxref">C.4.25 Section 6.4.1 Cascading order</a>
<li class="tocline3"><a href="changes.html#q21.220" class="tocxref">C.4.26 Section 6.4.3 Calculating a selector's specificity</a>
<li class="tocline3"><a href="changes.html#q21.221" class="tocxref">C.4.27 Section 7.2.1 The @media rule</a>
<li class="tocline3"><a href="changes.html#q21.222" class="tocxref">C.4.28 Section 7.3 Recognized media types</a>
<li class="tocline3"><a href="changes.html#q21.223" class="tocxref">C.4.29 Section 7.3.1 Media groups</a>
<li class="tocline3"><a href="changes.html#q21.224" class="tocxref">C.4.30 Section 8.1 Box dimensions</a>
<li class="tocline3"><a href="changes.html#q21.225" class="tocxref">C.4.31 Section 8.3 Margin properties</a>
<li class="tocline3"><a href="changes.html#q21.226" class="tocxref">C.4.32 Section 8.3.1 Collapsing margins</a>
<li class="tocline3"><a href="changes.html#q21.227" class="tocxref">C.4.33 Section 8.5.3 Border style</a>
<li class="tocline3"><a href="changes.html#q21.228" class="tocxref">C.4.34 Section 9.1.1 The viewport</a>
<li class="tocline3"><a href="changes.html#q21.229" class="tocxref">C.4.35 Section 9.2.4 The 'display' property</a>
<li class="tocline3"><a href="changes.html#q21.230" class="tocxref">C.4.36 Section 9.3.1 Choosing a positioning scheme</a>
<li class="tocline3"><a href="changes.html#q21.231" class="tocxref">C.4.37 Section 9.3.2 Box offsets</a>
<li class="tocline3"><a href="changes.html#q21.232" class="tocxref">C.4.38 Section 9.4.2 Inline formatting context</a>
<li class="tocline3"><a href="changes.html#q21.233" class="tocxref">C.4.39 Section 9.4.3 Relative positioning</a>
<li class="tocline3"><a href="changes.html#q21.234" class="tocxref">C.4.40 Section 9.5 Floats</a>
<li class="tocline3"><a href="changes.html#q21.235" class="tocxref">C.4.41 Section 9.5.1 Positioning the float</a>
<li class="tocline3"><a href="changes.html#q21.236" class="tocxref">C.4.42 Section 9.5.2 Controlling flow next to floats</a>
<li class="tocline3"><a href="changes.html#q21.237" class="tocxref">C.4.43 Section 9.8 Comparison of normal flow, floats, and absolute positioning</a>
<li class="tocline3"><a href="changes.html#q21.238" class="tocxref">C.4.44 Section 10.1 Definition of "containing block"</a>
<li class="tocline3"><a href="changes.html#q21.239" class="tocxref">C.4.45 Section 10.2 Content width</a>
<li class="tocline3"><a href="changes.html#q21.240" class="tocxref">C.4.46 Section 10.3.3 Block-level, non-replaced elements in normal flow</a>
<li class="tocline3"><a href="changes.html#q21.241" class="tocxref">C.4.47 Section 10.3.8 Absolutely positioning, replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.242" class="tocxref">C.4.48 Section 10.4 Minimum and maximum widths</a>
<li class="tocline3"><a href="changes.html#q21.243" class="tocxref">C.4.49 Section 10.6 Calculating heights and margins</a>
<li class="tocline3"><a href="changes.html#q21.244" class="tocxref">C.4.50 Section 10.7 Minimum and maximum heights</a>
<li class="tocline3"><a href="changes.html#q21.245" class="tocxref">C.4.51 Section 10.8 Line height calculations</a>
<li class="tocline3"><a href="changes.html#q21.246" class="tocxref">C.4.52 Section 10.8.1 Leading and half-leading</a>
<li class="tocline3"><a href="changes.html#q21.247" class="tocxref">C.4.53 Section 11.1 Overflow and clipping</a>
<li class="tocline3"><a href="changes.html#q21.248" class="tocxref">C.4.54 Section 11.1.1 Overflow</a>
<li class="tocline3"><a href="changes.html#q21.249" class="tocxref">C.4.55 Section 11.1.2 Clipping</a>
<li class="tocline3"><a href="changes.html#q21.250" class="tocxref">C.4.56 Section 11.2 Visibility</a>
<li class="tocline3"><a href="changes.html#q21.251" class="tocxref">C.4.57 Section 12.1 The :before and :after pseudo-elements</a>
<li class="tocline3"><a href="changes.html#q21.252" class="tocxref">C.4.58 Section 12.2 The 'content' property</a>
<li class="tocline3"><a href="changes.html#q21.253" class="tocxref">C.4.59 Section 12.3.2 Inserting quotes with the 'content' property</a>
<li class="tocline3"><a href="changes.html#q21.254" class="tocxref">C.4.60 Section 12.4 Automatic counters and numbering</a>
<li class="tocline3"><a href="changes.html#q21.255" class="tocxref">C.4.61 Section 12.4.3 Counters in elements with 'display: none'</a>
<li class="tocline3"><a href="changes.html#q21.256" class="tocxref">C.4.62 Section 14.2 The background</a>
<li class="tocline3"><a href="changes.html#q21.257" class="tocxref">C.4.63 Section 15.1 Fonts Introduction</a>
<li class="tocline3"><a href="changes.html#q21.258" class="tocxref">C.4.64 Section 15.2 Font matching algorithm</a>
<li class="tocline3"><a href="changes.html#q21.259" class="tocxref">C.4.65 Section 15.2.2 Font family</a>
<li class="tocline3"><a href="changes.html#q21.260" class="tocxref">C.4.66 Section 15.3.1 Generic font families</a>
<li class="tocline3"><a href="changes.html#q21.261" class="tocxref">C.4.67 Section 15.4 Font styling</a>
<li class="tocline3"><a href="changes.html#q21.262" class="tocxref">C.4.68 Section 15.5 Small-caps</a>
<li class="tocline3"><a href="changes.html#q21.263" class="tocxref">C.4.69 Section 15.6 Font boldness</a>
<li class="tocline3"><a href="changes.html#q21.264" class="tocxref">C.4.70 Section 15.7 Font size</a>
<li class="tocline3"><a href="changes.html#q21.265" class="tocxref">C.4.71 Section 16.1 Indentation</a>
<li class="tocline3"><a href="changes.html#q21.266" class="tocxref">C.4.72 Section 16.2 Alignment</a>
<li class="tocline3"><a href="changes.html#q21.267" class="tocxref">C.4.73 Section 16.3.1 Underlining, over lining, striking, and blinking</a>
<li class="tocline3"><a href="changes.html#q21.268" class="tocxref">C.4.74 Section 16.5 Capitalization</a>
<li class="tocline3"><a href="changes.html#q21.269" class="tocxref">C.4.75 Section 16.6 White space</a>
<li class="tocline3"><a href="changes.html#q21.270" class="tocxref">C.4.76 Section 17.1 Introduction to tables</a>
<li class="tocline3"><a href="changes.html#q21.271" class="tocxref">C.4.77 Section 17.2 The CSS table model</a>
<li class="tocline3"><a href="changes.html#q21.272" class="tocxref">C.4.78 Section 17.2.1 Anonymous table objects</a>
<li class="tocline3"><a href="changes.html#q21.273" class="tocxref">C.4.79 Section 17.4 Tables in the visual formatting model</a>
<li class="tocline3"><a href="changes.html#q21.274" class="tocxref">C.4.80 Section 17.5 Visual layout of table contents</a>
<li class="tocline3"><a href="changes.html#q21.275" class="tocxref">C.4.81 Section 17.5.1 Table layers and transparency</a>
<li class="tocline3"><a href="changes.html#q21.276" class="tocxref">C.4.82 Section 17.5.2 Table width algorithms</a>
<li class="tocline3"><a href="changes.html#q21.277" class="tocxref">C.4.83 Section 17.5.2.1 Fixed table layout</a>
<li class="tocline3"><a href="changes.html#q21.278" class="tocxref">C.4.84 Section 17.5.2.2 Automatic table layout</a>
<li class="tocline3"><a href="changes.html#q21.279" class="tocxref">C.4.85 Section 17.5.4 Horizontal alignment in a column</a>
<li class="tocline3"><a href="changes.html#q21.280" class="tocxref">C.4.86 Section 17.5.5 Dynamic row and column effects</a>
<li class="tocline3"><a href="changes.html#q21.281" class="tocxref">C.4.87 Section 17.6.1 The separated borders model</a>
<li class="tocline3"><a href="changes.html#q21.282" class="tocxref">C.4.88 Section 17.6.2 The collapsing borders model</a>
<li class="tocline3"><a href="changes.html#q21.283" class="tocxref">C.4.89 Section 18.2 System Colors</a>
<li class="tocline3"><a href="changes.html#q21.284" class="tocxref">C.4.90 Section 18.4 Dynamic outlines</a>
<li class="tocline3"><a href="changes.html#q21.285" class="tocxref">C.4.91 Section 18.4.1 Outlines and the focus</a>
<li class="tocline3"><a href="changes.html#q21.286" class="tocxref">C.4.92 Appendix D Default style sheet for HTML 4</a>
</ul>
<li class="tocline2"><a href="changes.html#errata" class="tocxref">C.5 Errata since the Candidate Recommendation of July 2007</a>
<ul class="toc">
<li class="tocline3"><a href="changes.html#q21.288" class="tocxref">C.5.1 Section 1.4.2.1 Value</a>
<li class="tocline3"><a href="changes.html#q21.289" class="tocxref">C.5.2 Section 2.3 The CSS 2.1 processing model</a>
<li class="tocline3"><a href="changes.html#q21.290" class="tocxref">C.5.3 Section 3.1 Definitions</a>
<li class="tocline3"><a href="changes.html#q21.291" class="tocxref">C.5.4 Section 4.1.1 Tokenization</a>
<li class="tocline3"><a href="changes.html#q21.292" class="tocxref">C.5.5 Section 4.1.2.2 Informative Historical Notes</a>
<li class="tocline3"><a href="changes.html#q21.293" class="tocxref">C.5.6 Section 4.1.3 Characters and case</a>
<li class="tocline3"><a href="changes.html#q21.294" class="tocxref">C.5.7 Section 4.1.3 Characters and case</a>
<li class="tocline3"><a href="changes.html#q21.295" class="tocxref">C.5.8 Section 4.1.3 Characters and case</a>
<li class="tocline3"><a href="changes.html#q21.296" class="tocxref">C.5.9 Section 4.1.3 Characters and case</a>
<li class="tocline3"><a href="changes.html#q21.297" class="tocxref">C.5.10 Section 4.1.5 At-rules</a>
<li class="tocline3"><a href="changes.html#q21.298" class="tocxref">C.5.11 Section 4.1.7 Rule sets, declaration blocks, and selectors</a>
<li class="tocline3"><a href="changes.html#q21.299" class="tocxref">C.5.12 Section 4.2 Rules for handling parsing errors</a>
<li class="tocline3"><a href="changes.html#q21.300" class="tocxref">C.5.13 Section 4.2 Rules for handling parsing errors</a>
<li class="tocline3"><a href="changes.html#q21.301" class="tocxref">C.5.14 Section 4.3.2 Lengths</a>
<li class="tocline3"><a href="changes.html#q21.302" class="tocxref">C.5.15 Section 4.3.5 Counters</a>
<li class="tocline3"><a href="changes.html#q21.303" class="tocxref">C.5.16 Section 5.8.1 Matching attributes and attribute values</a>
<li class="tocline3"><a href="changes.html#q21.304" class="tocxref">C.5.17 Section 5.8.2 Default attribute values in DTDs</a>
<li class="tocline3"><a href="changes.html#q21.305" class="tocxref">C.5.18 Section 5.11.4 The language pseudo-class: :lang</a>
<li class="tocline3"><a href="changes.html#q21.306" class="tocxref">C.5.19 Section 5.12.3 The :before and :after pseudo-elements</a>
<li class="tocline3"><a href="changes.html#q21.307" class="tocxref">C.5.20 Section 6.3 The @import rule</a>
<li class="tocline3"><a href="changes.html#q21.308" class="tocxref">C.5.21 Section 6.3 The @import rule</a>
<li class="tocline3"><a href="changes.html#q21.309" class="tocxref">C.5.22 Section 6.4.1 Cascading order</a>
<li class="tocline3"><a href="changes.html#q21.310" class="tocxref">C.5.23 Section 6.4.1 Cascading order</a>
<li class="tocline3"><a href="changes.html#q21.311" class="tocxref">C.5.24 Section 7.2.1 The @media rule</a>
<li class="tocline3"><a href="changes.html#q21.312" class="tocxref">C.5.25 Section 8.3.1 Collapsing margins</a>
<li class="tocline3"><a href="changes.html#q21.313" class="tocxref">C.5.26 Section 8.3.1 Collapsing margins</a>
<li class="tocline3"><a href="changes.html#q21.314" class="tocxref">C.5.27 Section 8.3.1 Collapsing margins</a>
<li class="tocline3"><a href="changes.html#q21.315" class="tocxref">C.5.28 Section 9.2.2 Inline-level elements and inline boxes</a>
<li class="tocline3"><a href="changes.html#q21.316" class="tocxref">C.5.29 Section 9.2.4 The 'display' property</a>
<li class="tocline3"><a href="changes.html#q21.317" class="tocxref">C.5.30 Section 9.3.2 Box offsets: 'top', 'right', 'bottom', 'left'</a>
<li class="tocline3"><a href="changes.html#q21.318" class="tocxref">C.5.31 Section 9.5 Floats</a>
<li class="tocline3"><a href="changes.html#q21.319" class="tocxref">C.5.32 Section 9.5 Floats</a>
<li class="tocline3"><a href="changes.html#q21.320" class="tocxref">C.5.33 Section 9.5.2 Controlling flow next to floats: the 'clear' property</a>
<li class="tocline3"><a href="changes.html#q21.321" class="tocxref">C.5.34 Section 9.6.1 Fixed positioning</a>
<li class="tocline3"><a href="changes.html#q21.322" class="tocxref">C.5.35 Section 9.9.1 Specifying the stack level: the 'z-index' property</a>
<li class="tocline3"><a href="changes.html#q21.323" class="tocxref">C.5.36 Section 10.1 Definition of "containing block"</a>
<li class="tocline3"><a href="changes.html#q21.324" class="tocxref">C.5.37 Section 10.3 Calculating widths and margins</a>
<li class="tocline3"><a href="changes.html#q21.325" class="tocxref">C.5.38 Section 10.3.1 Inline, non-replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.326" class="tocxref">C.5.39 Section 10.3.2 Inline, replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.327" class="tocxref">C.5.40 Section 10.3.2 Inline, replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.328" class="tocxref">C.5.41 Section 10.3.3 Block-level, non-replaced elements in normal flow</a>
<li class="tocline3"><a href="changes.html#q21.329" class="tocxref">C.5.42 Section 10.3.7 Absolutely positioned, non-replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.330" class="tocxref">C.5.43 Section 10.3.7 Absolutely positioned, non-replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.331" class="tocxref">C.5.44 Section 10.3.8 Absolutely positioned, replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.332" class="tocxref">C.5.45 Section 10.3.8 Absolutely positioned, replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.333" class="tocxref">C.5.46 Section 10.3.8 Absolutely positioned, replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.334" class="tocxref">C.5.47 Section 10.5 Content height: the 'height' property</a>
<li class="tocline3"><a href="changes.html#q21.335" class="tocxref">C.5.48 Section 10.6.2 Inline replaced elements […]</a>
<li class="tocline3"><a href="changes.html#q21.336" class="tocxref">C.5.49 Section 10.6.4 Absolutely positioned, non-replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.337" class="tocxref">C.5.50 Section 10.6.5 Absolutely positioned, replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.338" class="tocxref">C.5.51 Section 10.8.1 Leading and half-leading</a>
<li class="tocline3"><a href="changes.html#q21.339" class="tocxref">C.5.52 Section 11.1.1 Overflow: the 'overflow' property</a>
<li class="tocline3"><a href="changes.html#q21.340" class="tocxref">C.5.53 Section 11.1.2 Clipping: the 'clip' property</a>
<li class="tocline3"><a href="changes.html#q21.341" class="tocxref">C.5.54 Section 12.2 The 'content' property</a>
<li class="tocline3"><a href="changes.html#q21.342" class="tocxref">C.5.55 Section 12.4.2 Counter styles</a>
<li class="tocline3"><a href="changes.html#q21.343" class="tocxref">C.5.56 Section 12.5 Lists</a>
<li class="tocline3"><a href="changes.html#q21.344" class="tocxref">C.5.57 Section 12.5.1 Lists: the 'list-style-type', 'list-style-image', 'list-style-position', and 'list-style' properties</a>
<li class="tocline3"><a href="changes.html#q21.345" class="tocxref">C.5.58 Section 12.5.1 Lists: the 'list-style-type', 'list-style-image', 'list-style-position', and 'list-style' properties</a>
<li class="tocline3"><a href="changes.html#q21.346" class="tocxref">C.5.59 Section 12.5.1 Lists: the 'list-style-type', 'list-style-image', 'list-style-position', and 'list-style' properties</a>
<li class="tocline3"><a href="changes.html#q21.347" class="tocxref">C.5.60 Section 13.2 Page boxes: the @page rule</a>
<li class="tocline3"><a href="changes.html#q21.348" class="tocxref">C.5.61 Section 13.2.1.1 Rendering page boxes that do not fit a target sheet</a>
<li class="tocline3"><a href="changes.html#q21.349" class="tocxref">C.5.62 Section 13.2.3 Content outside the page box</a>
<li class="tocline3"><a href="changes.html#q21.350" class="tocxref">C.5.63 Section 13.3.1 Page break properties: 'page-break-before', 'page-break-after', 'page-break-inside'</a>
<li class="tocline3"><a href="changes.html#q21.351" class="tocxref">C.5.64 Section 13.3.1 Page break properties: 'page-break-before', 'page-break-after', 'page-break-inside'</a>
<li class="tocline3"><a href="changes.html#q21.352" class="tocxref">C.5.65 Section 13.3.2 Breaks inside elements: 'orphans', 'widows'</a>
<li class="tocline3"><a href="changes.html#q21.353" class="tocxref">C.5.66 Section 13.3.2 Breaks inside elements: 'orphans', 'widows'</a>
<li class="tocline3"><a href="changes.html#q21.354" class="tocxref">C.5.67 Section 13.3.3 Allowed page breaks</a>
<li class="tocline3"><a href="changes.html#q21.355" class="tocxref">C.5.68 Section 13.3.3 Allowed page breaks</a>
<li class="tocline3"><a href="changes.html#q21.356" class="tocxref">C.5.69 Section 13.3.3 Allowed page breaks</a>
<li class="tocline3"><a href="changes.html#q21.357" class="tocxref">C.5.70 Section 13.3.5 "Best" page breaks</a>
<li class="tocline3"><a href="changes.html#q21.358" class="tocxref">C.5.71 Section 14.2 The background</a>
<li class="tocline3"><a href="changes.html#q21.359" class="tocxref">C.5.72 Section 14.2 The background</a>
<li class="tocline3"><a href="changes.html#q21.360" class="tocxref">C.5.73 Section 14.2.1 Background properties: 'background-color', 'background-image', 'background-repeat', 'background-attachment', 'background-position', and 'background'</a>
<li class="tocline3"><a href="changes.html#q21.361" class="tocxref">C.5.74 Section 15.6 Font boldness: the 'font-weight' property</a>
<li class="tocline3"><a href="changes.html#q21.362" class="tocxref">C.5.75 Section 16.6 Whitespace: the 'white-space' property</a>
<li class="tocline3"><a href="changes.html#q21.363" class="tocxref">C.5.76 Section 16.6.1 The 'white-space' processing model</a>
<li class="tocline3"><a href="changes.html#q21.364" class="tocxref">C.5.77 Section 17.2.1 Anonymous table objects</a>
<li class="tocline3"><a href="changes.html#q21.365" class="tocxref">C.5.78 Section 17.2.1 Anonymous table objects</a>
<li class="tocline3"><a href="changes.html#q21.366" class="tocxref">C.5.79 Section 17.4 Tables in the visual formatting model</a>
<li class="tocline3"><a href="changes.html#q21.367" class="tocxref">C.5.80 Section 17.5.4 Horizontal alignment in a column</a>
<li class="tocline3"><a href="changes.html#q21.368" class="tocxref">C.5.81 Section 18.1 Cursors: the 'cursor' property</a>
<li class="tocline3"><a href="changes.html#q21.369" class="tocxref">C.5.82 Section B.2 Informative references</a>
<li class="tocline3"><a href="changes.html#q21.370" class="tocxref">C.5.83 Appendix D. Default style sheet for HTML 4</a>
<li class="tocline3"><a href="changes.html#q21.371" class="tocxref">C.5.84 Appendix D. Default style sheet for HTML 4</a>
<li class="tocline3"><a href="changes.html#q21.372" class="tocxref">C.5.85 Section E.2 Painting order</a>
<li class="tocline3"><a href="changes.html#q21.373" class="tocxref">C.5.86 Appendix G. Grammar of CSS 2.1</a>
<li class="tocline3"><a href="changes.html#q21.374" class="tocxref">C.5.87 Section G.1 Grammar</a>
<li class="tocline3"><a href="changes.html#q21.375" class="tocxref">C.5.88 Section G.2 Lexical scanner</a>
<li class="tocline3"><a href="changes.html#q21.376" class="tocxref">C.5.89 Section G.2 Lexical scanner</a>
<li class="tocline3"><a href="changes.html#q21.377" class="tocxref">C.5.90 Section G.2 Lexical scanner</a>
<li class="tocline3"><a href="changes.html#q21.378" class="tocxref">C.5.91 Section G.2 Lexical scanner</a>
<li class="tocline3"><a href="changes.html#q21.379" class="tocxref">C.5.92 Appendix I. Index</a>
</ul>
<li class="tocline2"><a href="changes.html#errata2" class="tocxref">C.6 Errata since the Candidate Recommendation of April 2009</a>
<ul class="toc">
<li class="tocline3"><a href="changes.html#q21.381" class="tocxref">C.6.1 Section 4.2 Rules for handling parsing errors</a>
<li class="tocline3"><a href="changes.html#q21.382" class="tocxref">C.6.2 Section 13.3.3 Allowed page breaks</a>
<li class="tocline3"><a href="changes.html#q21.383" class="tocxref">C.6.3 Section 15.3 Font family: the 'font-family' property</a>
<li class="tocline3"><a href="changes.html#q21.384" class="tocxref">C.6.4 Section 15.3.1.1 serif</a>
<li class="tocline3"><a href="changes.html#q21.385" class="tocxref">C.6.5 Section 15.7 Font size: the 'font-size' property</a>
<li class="tocline3"><a href="changes.html#q21.386" class="tocxref">C.6.6 Section 17.5.2.1 Fixed table layout</a>
<li class="tocline3"><a href="changes.html#q21.387" class="tocxref">C.6.7 Section 17.5.3 Table height layout</a>
<li class="tocline3"><a href="changes.html#q21.388" class="tocxref">C.6.8 Appendix G. Grammar of CSS 2.1</a>
</ul>
<li class="tocline2"><a href="changes.html#errata3" class="tocxref">C.7 Errata since the Candidate Recommendation of September 2009</a>
<ul class="toc">
<li class="tocline3"><a href="changes.html#q21.390" class="tocxref">C.7.1 Section 1.4.2.1 Value</a>
<li class="tocline3"><a href="changes.html#q21.391" class="tocxref">C.7.2 Section 3.1 Definitions</a>
<li class="tocline3"><a href="changes.html#q21.392" class="tocxref">C.7.3 Section 4.1.1 Tokenization</a>
<li class="tocline3"><a href="changes.html#q21.393" class="tocxref">C.7.4 Section 4.1.1 Tokenization</a>
<li class="tocline3"><a href="changes.html#q21.394" class="tocxref">C.7.5 Section 4.1.1 Tokenization</a>
<li class="tocline3"><a href="changes.html#q21.395" class="tocxref">C.7.6 Section 4.1.1 Tokenization</a>
<li class="tocline3"><a href="changes.html#q21.396" class="tocxref">C.7.7 Section 4.1.2.2 Informative Historical Notes</a>
<li class="tocline3"><a href="changes.html#q21.397" class="tocxref">C.7.8 Section 4.1.3 Characters and case</a>
<li class="tocline3"><a href="changes.html#q21.398" class="tocxref">C.7.9 Section 4.1.3 Characters and case</a>
<li class="tocline3"><a href="changes.html#q21.399" class="tocxref">C.7.10 Section 4.1.8 Declarations and properties</a>
<li class="tocline3"><a href="changes.html#q21.400" class="tocxref">C.7.11 Section 4.2 Rules for handling parsing errors</a>
<li class="tocline3"><a href="changes.html#q21.401" class="tocxref">C.7.12 Section 4.3.2 Lengths</a>
<li class="tocline3"><a href="changes.html#q21.402" class="tocxref">C.7.13 Section 4.3.2 Lengths</a>
<li class="tocline3"><a href="changes.html#q21.403" class="tocxref">C.7.14 Section 4.3.4 URLs and URIs</a>
<li class="tocline3"><a href="changes.html#q21.404" class="tocxref">C.7.15 Section 4.3.4 URLs and URIs</a>
<li class="tocline3"><a href="changes.html#q21.405" class="tocxref">C.7.16 Section 5.8.2 Default attribute values in DTDs</a>
<li class="tocline3"><a href="changes.html#q21.406" class="tocxref">C.7.17 Section 5.11.4 The language pseudo-class: :lang</a>
<li class="tocline3"><a href="changes.html#q21.407" class="tocxref">C.7.18 Section 5.12 Pseudo-elements</a>
<li class="tocline3"><a href="changes.html#q21.408" class="tocxref">C.7.19 Section 5.12.1 The :first-line pseudo-element</a>
<li class="tocline3"><a href="changes.html#q21.409" class="tocxref">C.7.20 Section 5.12.2 The :first-letter pseudo-element</a>
<li class="tocline3"><a href="changes.html#q21.410" class="tocxref">C.7.21 Section 6.2 Inheritance</a>
<li class="tocline3"><a href="changes.html#q21.411" class="tocxref">C.7.22 Section 6.4.4 Precedence of non-CSS presentational hints</a>
<li class="tocline3"><a href="changes.html#q21.412" class="tocxref">C.7.23 Section 7.3 Recognized media types</a>
<li class="tocline3"><a href="changes.html#q21.413" class="tocxref">C.7.24 Section 8.3.1 Collapsing margins</a>
<li class="tocline3"><a href="changes.html#q21.414" class="tocxref">C.7.25 Section 8.3.1 Collapsing margins</a>
<li class="tocline3"><a href="changes.html#q21.415" class="tocxref">C.7.26 Section 9.2.1 Block-level elements and block boxes</a>
<li class="tocline3"><a href="changes.html#q21.416" class="tocxref">C.7.27 Section 9.2.1.1 Anonymous block boxes</a>
<li class="tocline3"><a href="changes.html#q21.417" class="tocxref">C.7.28 Section 9.2.1.1 Anonymous block boxes</a>
<li class="tocline3"><a href="changes.html#q21.418" class="tocxref">C.7.29 Section 9.2.1.1 Anonymous block boxes</a>
<li class="tocline3"><a href="changes.html#q21.419" class="tocxref">C.7.30 Section 9.2.1.1 Anonymous block boxes</a>
<li class="tocline3"><a href="changes.html#q21.420" class="tocxref">C.7.31 Section 9.2.2 Inline-level elements and inline boxes</a>
<li class="tocline3"><a href="changes.html#q21.421" class="tocxref">C.7.32 Section 9.2.3 Run-in boxes</a>
<li class="tocline3"><a href="changes.html#q21.422" class="tocxref">C.7.33 Section 9.2.4 The 'display' property</a>
<li class="tocline3"><a href="changes.html#q21.423" class="tocxref">C.7.34 Section 9.2.4 The 'display' property</a>
<li class="tocline3"><a href="changes.html#q21.424" class="tocxref">C.7.35 Section 9.3 Positioning schemes</a>
<li class="tocline3"><a href="changes.html#q21.425" class="tocxref">C.7.36 Section 9.4 Normal flow</a>
<li class="tocline3"><a href="changes.html#q21.426" class="tocxref">C.7.37 Section 9.3.2 Box offsets: 'top', 'right', 'bottom', 'left'</a>
<li class="tocline3"><a href="changes.html#q21.427" class="tocxref">C.7.38 Section 9.5 Floats</a>
<li class="tocline3"><a href="changes.html#q21.428" class="tocxref">C.7.39 Section 9.5 Floats</a>
<li class="tocline3"><a href="changes.html#q21.429" class="tocxref">C.7.40 Section 9.5.2 Controlling flow next to floats: the 'clear' property</a>
<li class="tocline3"><a href="changes.html#q21.430" class="tocxref">C.7.41 Section 9.5.2 Controlling flow next to floats: the 'clear' property</a>
<li class="tocline3"><a href="changes.html#q21.431" class="tocxref">C.7.42 Section 9.5.2 Controlling flow next to floats: the 'clear' property</a>
<li class="tocline3"><a href="changes.html#q21.432" class="tocxref">C.7.43 Section 9.5.2 Controlling flow next to floats: the 'clear' property</a>
<li class="tocline3"><a href="changes.html#q21.433" class="tocxref">C.7.44 Section 14.2.1 Background properties</a>
<li class="tocline3"><a href="changes.html#q21.434" class="tocxref">C.7.45 Section 9.9.1 Specifying the stack level: the 'z-index' property</a>
<li class="tocline3"><a href="changes.html#q21.435" class="tocxref">C.7.46 Section 9.10 Text direction: the 'direction' and 'unicode-bidi' properties</a>
<li class="tocline3"><a href="changes.html#q21.436" class="tocxref">C.7.47 Section 9.10 Text direction: the 'direction' and 'unicode-bidi' properties</a>
<li class="tocline3"><a href="changes.html#q21.437" class="tocxref">C.7.48 Section 9.10 Text direction: the 'direction' and 'unicode-bidi' properties</a>
<li class="tocline3"><a href="changes.html#q21.438" class="tocxref">C.7.49 Section 10.1 Definition of "containing block"</a>
<li class="tocline3"><a href="changes.html#q21.439" class="tocxref">C.7.50 Section 10.2 Content width: the 'width' property</a>
<li class="tocline3"><a href="changes.html#q21.440" class="tocxref">C.7.51 Section 10.2 Content width: the 'width' property</a>
<li class="tocline3"><a href="changes.html#q21.441" class="tocxref">C.7.52 Section 10.2 Content width: the 'width' property</a>
<li class="tocline3"><a href="changes.html#q21.442" class="tocxref">C.7.53 Section 10.5 Content height: the 'height' property</a>
<li class="tocline3"><a href="changes.html#q21.443" class="tocxref">C.7.54 Section 10.5 Content height: the 'height' property</a>
<li class="tocline3"><a href="changes.html#q21.444" class="tocxref">C.7.55 Section 10.6.7 'Auto' heights for block formatting context roots</a>
<li class="tocline3"><a href="changes.html#q21.445" class="tocxref">C.7.56 Section 10.7 Minimum and maximum heights: 'min-height' and 'max-height'</a>
<li class="tocline3"><a href="changes.html#q21.446" class="tocxref">C.7.57 Section 10.8 Line height calculations: the 'line-height' and 'vertical-align' properties</a>
<li class="tocline3"><a href="changes.html#q21.447" class="tocxref">C.7.58 Section 10.8 Line height calculations: the 'line-height' and 'vertical-align' properties</a>
<li class="tocline3"><a href="changes.html#q21.448" class="tocxref">C.7.59 Section 10.8.1 Leading and half-leading</a>
<li class="tocline3"><a href="changes.html#q21.449" class="tocxref">C.7.60 Section 10.8.1 Leading and half-leading</a>
<li class="tocline3"><a href="changes.html#q21.450" class="tocxref">C.7.61 Section 10.8.1 Leading and half-leading</a>
<li class="tocline3"><a href="changes.html#q21.451" class="tocxref">C.7.62 Section 11.1 Overflow and clipping</a>
<li class="tocline3"><a href="changes.html#q21.452" class="tocxref">C.7.63 Section 11.1.1 Overflow: the 'overflow' property</a>
<li class="tocline3"><a href="changes.html#q21.453" class="tocxref">C.7.64 Section 11.1.1 Overflow: the 'overflow' property</a>
<li class="tocline3"><a href="changes.html#q21.454" class="tocxref">C.7.65 Section 11.1.1 Overflow: the 'overflow' property</a>
<li class="tocline3"><a href="changes.html#q21.455" class="tocxref">C.7.66 Section 11.1.2 Clipping: the 'clip' property</a>
<li class="tocline3"><a href="changes.html#q21.456" class="tocxref">C.7.67 Section 12.5 Lists</a>
<li class="tocline3"><a href="changes.html#q21.457" class="tocxref">C.7.68 Section 12.5.1 Lists: the 'list-style-type', 'list-style-image', 'list-style-position', and 'list-style' properties</a>
<li class="tocline3"><a href="changes.html#q21.458" class="tocxref">C.7.69 Section 12.5.1 Lists: the 'list-style-type', 'list-style-image', 'list-style-position', and 'list-style' properties</a>
<li class="tocline3"><a href="changes.html#q21.459" class="tocxref">C.7.70 Section 12.5.1 Lists: the 'list-style-type', 'list-style-image', 'list-style-position', and 'list-style' properties</a>
<li class="tocline3"><a href="changes.html#q21.460" class="tocxref">C.7.71 Section 12.5.1 Lists: the 'list-style-type', 'list-style-image', 'list-style-position', and 'list-style' properties</a>
<li class="tocline3"><a href="changes.html#q21.461" class="tocxref">C.7.72 Section 12.5.1 Lists: the 'list-style-type', 'list-style-image', 'list-style-position', and 'list-style' properties</a>
<li class="tocline3"><a href="changes.html#q21.462" class="tocxref">C.7.73 Section 13.2 Page boxes: the @page rule</a>
<li class="tocline3"><a href="changes.html#q21.463" class="tocxref">C.7.74 Section 13.2.2 Page selectors: selecting left, right, and first pages</a>
<li class="tocline3"><a href="changes.html#q21.464" class="tocxref">C.7.75 Section 13.3.2 Breaks inside elements: 'orphans', 'widows'</a>
<li class="tocline3"><a href="changes.html#q21.465" class="tocxref">C.7.76 Section 13.3.3 Allowed page breaks</a>
<li class="tocline3"><a href="changes.html#q21.466" class="tocxref">C.7.77 Section 15.3 Font family: the 'font-family' property</a>
<li class="tocline3"><a href="changes.html#q21.467" class="tocxref">C.7.78 Section 15.3.1 Generic font families</a>
<li class="tocline3"><a href="changes.html#q21.468" class="tocxref">C.7.79 Section 15.6 Font boldness: the 'font-weight' property</a>
<li class="tocline3"><a href="changes.html#q21.469" class="tocxref">C.7.80 Section 15.6 Font boldness: the 'font-weight' property</a>
<li class="tocline3"><a href="changes.html#q21.470" class="tocxref">C.7.81 Section 15.7 Font size: the 'font-size' property</a>
<li class="tocline3"><a href="changes.html#q21.471" class="tocxref">C.7.82 Section 16.1 Indentation: the 'text-indent' property</a>
<li class="tocline3"><a href="changes.html#q21.472" class="tocxref">C.7.83 Section 16.1 Indentation: the 'text-indent' property</a>
<li class="tocline3"><a href="changes.html#q21.473" class="tocxref">C.7.84 Section 16.2 Alignment: the 'text-align' property</a>
<li class="tocline3"><a href="changes.html#q21.474" class="tocxref">C.7.85 Section 16.2 Alignment: the 'text-align' property</a>
<li class="tocline3"><a href="changes.html#q21.475" class="tocxref">C.7.86 Section 16.3.1 Underlining, overlining, striking, and blinking: the 'text-decoration' property</a>
<li class="tocline3"><a href="changes.html#q21.476" class="tocxref">C.7.87 Section 16.3.1 Underlining, overlining, striking, and blinking: the 'text-decoration' property</a>
<li class="tocline3"><a href="changes.html#q21.477" class="tocxref">C.7.88 Section 16.4 Letter and word spacing: the 'letter-spacing' and 'word-spacing' properties</a>
<li class="tocline3"><a href="changes.html#q21.478" class="tocxref">C.7.89 Section 16.6 White space: the 'white-space' property</a>
<li class="tocline3"><a href="changes.html#q21.479" class="tocxref">C.7.90 Section 16.6.1 The 'white-space' processing model</a>
<li class="tocline3"><a href="changes.html#q21.480" class="tocxref">C.7.91 Section 16.6.1 The 'white-space' processing model</a>
<li class="tocline3"><a href="changes.html#q21.481" class="tocxref">C.7.92 Section 16.6.1 The 'white-space' processing model</a>
<li class="tocline3"><a href="changes.html#q21.482" class="tocxref">C.7.93 Section 17.2 The CSS table model</a>
<li class="tocline3"><a href="changes.html#q21.483" class="tocxref">C.7.94 Section 17.2.1 Anonymous table objects</a>
<li class="tocline3"><a href="changes.html#q21.484" class="tocxref">C.7.95 Section 17.2.1 Anonymous table objects</a>
<li class="tocline3"><a href="changes.html#q21.485" class="tocxref">C.7.96 Section 17.4 Tables in the visual formatting model</a>
<li class="tocline3"><a href="changes.html#q21.486" class="tocxref">C.7.97 Section 17.4 Tables in the visual formatting model</a>
<li class="tocline3"><a href="changes.html#q21.487" class="tocxref">C.7.98 Section 17.5.2.2 Automatic table layout</a>
<li class="tocline3"><a href="changes.html#q21.488" class="tocxref">C.7.99 Section 17.5.3 Table height algorithms</a>
<li class="tocline3"><a href="changes.html#q21.489" class="tocxref">C.7.100 Section 17.5.4 Horizontal alignment in a column</a>
<li class="tocline3"><a href="changes.html#q21.490" class="tocxref">C.7.101 Section B.2 Informative references</a>
<li class="tocline3"><a href="changes.html#q21.491" class="tocxref">C.7.102 Section D. Default style sheet for HTML 4</a>
<li class="tocline3"><a href="changes.html#q21.492" class="tocxref">C.7.103 Section E.2 Painting order</a>
<li class="tocline3"><a href="changes.html#q21.493" class="tocxref">C.7.104 Appendix G Grammar of CSS 2.1</a>
</ul>
<li class="tocline2"><a href="changes.html#q21.494" class="tocxref">C.8 Changes since the working draft of 7 December 2010</a>
<ul class="toc">
<li class="tocline3"><a href="changes.html#q21.495" class="tocxref">C.8.1 8.3.1 Collapsing margins</a>
<li class="tocline3"><a href="changes.html#q21.496" class="tocxref">C.8.2 10.8.1 Leading and half-leading</a>
<li class="tocline3"><a href="changes.html#q21.497" class="tocxref">C.8.3 10.3 Calculating widths and margins</a>
<li class="tocline3"><a href="changes.html#q21.498" class="tocxref">C.8.4 14.3 Gamma correction</a>
<li class="tocline3"><a href="changes.html#q21.499" class="tocxref">C.8.5 11.1.2 Clipping: the 'clip' property</a>
<li class="tocline3"><a href="changes.html#q21.500" class="tocxref">C.8.6 9.4.2 Inline formatting contexts</a>
<li class="tocline3"><a href="changes.html#q21.501" class="tocxref">C.8.7 10.3.2 Inline, replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.502" class="tocxref">C.8.8 10.1 Definition of "containing block"</a>
<li class="tocline3"><a href="changes.html#q21.503" class="tocxref">C.8.9 13.2.2 Page selectors: selecting left, right, and first pages</a>
<li class="tocline3"><a href="changes.html#q21.504" class="tocxref">C.8.10 8.3.1 Collapsing margins</a>
<li class="tocline3"><a href="changes.html#q21.505" class="tocxref">C.8.11 10.8 Line height calculations: the 'line-height' and 'vertical-align' properties</a>
<li class="tocline3"><a href="changes.html#q21.506" class="tocxref">C.8.12 10.8.1 Leading and half-leading</a>
<li class="tocline3"><a href="changes.html#q21.507" class="tocxref">C.8.13 10.6.1 Inline, non-replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.508" class="tocxref">C.8.14 9.5.1 Positioning the float: the 'float' property</a>
<li class="tocline3"><a href="changes.html#q21.509" class="tocxref">C.8.15 9.2.1.1 Anonymous block boxes</a>
<li class="tocline3"><a href="changes.html#q21.510" class="tocxref">C.8.16 5.12.1 The :first-line pseudo-element</a>
<li class="tocline3"><a href="changes.html#q21.511" class="tocxref">C.8.17 16.6 White space: the 'white-space' property</a>
<li class="tocline3"><a href="changes.html#q21.512" class="tocxref">C.8.18 12.5.1 Lists: the 'list-style-type', 'list-style-image', 'list-style-position', and 'list-style' properties</a>
<li class="tocline3"><a href="changes.html#q21.513" class="tocxref">C.8.19 9.7 Relationships between 'display', 'position', and 'float'</a>
<li class="tocline3"><a href="changes.html#q21.514" class="tocxref">C.8.20 9.4.2 Inline formatting contexts</a>
<li class="tocline3"><a href="changes.html#q21.515" class="tocxref">C.8.21 4.1.9 Comments</a>
<li class="tocline3"><a href="changes.html#q21.516" class="tocxref">C.8.22 12.5.1 Lists: the 'list-style-type', 'list-style-image', 'list-style-position', and 'list-style' properties</a>
<li class="tocline3"><a href="changes.html#q21.517" class="tocxref">C.8.23 9.5.1 Positioning the float: the 'float' property</a>
<li class="tocline3"><a href="changes.html#q21.518" class="tocxref">C.8.24 9.3 Positioning schemes</a>
<li class="tocline3"><a href="changes.html#q21.519" class="tocxref">C.8.25 9.10 Text direction: the 'direction' and 'unicode-bidi' properties</a>
<li class="tocline3"><a href="changes.html#q21.520" class="tocxref">C.8.26 16.3.1 Underlining, overlining, striking, and blinking: the 'text-decoration' property</a>
<li class="tocline3"><a href="changes.html#q21.521" class="tocxref">C.8.27 16.3.1 Underlining, overlining, striking, and blinking: the 'text-decoration' property</a>
<li class="tocline3"><a href="changes.html#q21.522" class="tocxref">C.8.28 10.4 Minimum and maximum widths: 'min-width' and 'max-width'</a>
<li class="tocline3"><a href="changes.html#q21.523" class="tocxref">C.8.29 9.3.2 Box offsets: 'top', 'right', 'bottom', 'left'</a>
<li class="tocline3"><a href="changes.html#q21.524" class="tocxref">C.8.30 9.2.1.1 Anonymous block boxes</a>
<li class="tocline3"><a href="changes.html#q21.525" class="tocxref">C.8.31 17.4 Tables in the visual formatting model</a>
<li class="tocline3"><a href="changes.html#q21.526" class="tocxref">C.8.32 11.1.2 Clipping: the 'clip' property</a>
<li class="tocline3"><a href="changes.html#q21.527" class="tocxref">C.8.33 13.2 Page boxes: the @page rule</a>
<li class="tocline3"><a href="changes.html#q21.528" class="tocxref">C.8.34 4.1.1 Tokenization</a>
<li class="tocline3"><a href="changes.html#q21.529" class="tocxref">C.8.35 4.2 Rules for handling parsing errors</a>
<li class="tocline3"><a href="changes.html#q21.530" class="tocxref">C.8.36 3.1 Definitions</a>
<li class="tocline3"><a href="changes.html#q21.531" class="tocxref">C.8.37 4.3.4 URLs and URIs</a>
<li class="tocline3"><a href="changes.html#q21.532" class="tocxref">C.8.38 9.5 Floats</a>
<li class="tocline3"><a href="changes.html#q21.533" class="tocxref">C.8.39 11.1.1 Overflow: the 'overflow' property</a>
<li class="tocline3"><a href="changes.html#q21.534" class="tocxref">C.8.40 9.2.1.1 Anonymous block boxes</a>
<li class="tocline3"><a href="changes.html#q21.535" class="tocxref">C.8.41 16.2 Alignment: the 'text-align' property</a>
<li class="tocline3"><a href="changes.html#q21.536" class="tocxref">C.8.42 9.5 Floats</a>
<li class="tocline3"><a href="changes.html#q21.537" class="tocxref">C.8.43 9.4.2 Inline formatting contexts</a>
<li class="tocline3"><a href="changes.html#q21.538" class="tocxref">C.8.44 5.12 Pseudo-elements</a>
<li class="tocline3"><a href="changes.html#q21.539" class="tocxref">C.8.45 9.5 Floats</a>
<li class="tocline3"><a href="changes.html#q21.540" class="tocxref">C.8.46 9.5 Floats</a>
<li class="tocline3"><a href="changes.html#q21.541" class="tocxref">C.8.47 14.2.1 Background properties: 'background-color', 'background-image', 'background-repeat', 'background-attachment', 'background-position', and 'background'</a>
<li class="tocline3"><a href="changes.html#q21.542" class="tocxref">C.8.48 9.2.4 The 'display' property</a>
<li class="tocline3"><a href="changes.html#q21.543" class="tocxref">C.8.49 6.1.2 Computed values</a>
<li class="tocline3"><a href="changes.html#q21.544" class="tocxref">C.8.50 10.3.2 Inline, replaced elements</a>
<li class="tocline3"><a href="changes.html#q21.545" class="tocxref">C.8.51 Section 9.5.2 Controlling flow next to floats: the 'clear' property</a>
<li class="tocline3"><a href="changes.html#q21.546" class="tocxref">C.8.52 G.2 Lexical scanner</a>
<li class="tocline3"><a href="changes.html#q21.547" class="tocxref">C.8.53 Section 9.5.2 Controlling flow next to floats: the 'clear' property</a>
<li class="tocline3"><a href="changes.html#q21.548" class="tocxref">C.8.54 9.5 Floats</a>
<li class="tocline3"><a href="changes.html#q21.549" class="tocxref">C.8.55 10.6.3 Block-level non-replaced elements in normal flow when 'overflow' computes to 'visible'</a>
</ul>
</ul>
</div>
<!-- warning -->
<!-- /warning -->
<P><em>This appendix is informative, not normative.</em></P>
<P>CSS 2.1 is an updated revision of CSS2. The changes between
the CSS2 specification (see <a href="refs.html#ref-CSS2" rel="biblioentry" class="noxref"><span class="informref">[CSS2]</span></a>) and this specification fall into
five groups: <a href="#known-errors">known errors,</a> typographical
errors, <a href="#clarifications">clarifications,</a> <a
href="#changes">changes</a> and <a href="#new">additions.</a>
Typographical errors are not listed here.</P>
<p>In addition, this chapter lists the <a href="#errata">errata
(part 1</a> and <a href="#errata2">part 2)</a>
that were subsequently applied to CSS 2.1 since it became a
Candidate Recommendation in July 2007.
<p>This chapter is not a complete list of changes. Minor editorial
changes and most changes to examples are also not listed here.</p>
<h2>C.1 <a name="new">Additional property values</a></h2>
<h3 id="a4.3.6"><a name="q21.2">C.1.1 </a><a href="syndata.html#color-units">Section 4.3.6
Colors</a></h3>
<p>New color value: 'orange'
<h3 id="a9.2.4"><a name="q21.3">C.1.2 </a><a href="visuren.html#propdef-display">Section 9.2.4
The 'display' property</a></h3>
<p>New 'display' value: 'inline-block'
<h3 id="a12.2"><a name="q21.4">C.1.3 </a><a href="generate.html#content">Section 12.2 The
'content' property</a></h3>
<p>New 'content' values 'none' and 'normal'. (The values 'none' and
'normal' are equivalent in CSS 2.1, but may have different
functions in CSS3.)
<h3 id="a16.6"><a name="q21.5">C.1.4 </a><a href="text.html#propdef-white-space">Section 16.6
White space: the 'white-space' property</a></h3>
<p>New 'white-space' values: 'pre-wrap' and 'pre-line'
<h3 id="a18.1"><a name="q21.6">C.1.5 </a><a href="ui.html#propdef-cursor">Section 18.1 Cursors:
the 'cursor' property</a></h3>
<p>New 'cursor' value: 'progress'
<h2>C.2 <a name="changes">Changes</a></h2>
<h3 id="c1.1"><a name="q21.8">C.2.1 </a><a href="about.html#css2.1-v-css2">Section 1.1 CSS 2.1 vs CSS 2</a></h3>
<p>This new section is added to explain the motivation for CSS2.1
and its relation to CSS2.</p>
<h3 id="c1.2"><a name="q21.9">C.2.2 </a><a href="about.html#reading">Section 1.2 Reading the specification</a></h3>
<p>This section (formerly Section 1.1) has been marked non-normative.</p>
<h3 id="c1.3"><a name="q21.10">C.2.3 </a><a href="about.html#organization">Section 1.3 How the specification is organized</a></h3>
<p>This section (formerly Section 1.2) has been marked non-normative.</p>
<h3 id="c1.4.2.1"><a name="q21.11">C.2.4 </a><a href="about.html#value-defs">Section 1.4.2.1 Value</a></h3>
<p>This section (formerly unnumbered under 1.3.2) notes that value types are specified
in terms of tokens and that spaces may appear between tokens in values. A note
explains that spaces are required between some tokens.</p>
<h3 id="c1.4.2.6"><a name="q21.12">C.2.5 </a><a href="about.html#media-applies">Section 1.4.2.6 Media groups</a></h3>
<p>This section (formerly unnumbered under 1.3.2) now declares the Media line
in property definitions to be non-normative.</p>
<h3 id="c1.4.2.7"><a name="q21.13">C.2.6 </a><a href="about.html#computed-defs">Section 1.4.2.7 Computed value</a></h3>
<p>A new line is added to each property definition specifying what the computed
values are for the property. (This defines what level of computation is done to
a property value before inheritance and before certain other calculations.)</p>
<h3 id="c1.4.4"><a name="q21.14">C.2.7 </a><a href="about.html#notes-and-examples">Section 1.4.4 Notes and examples</a></h3>
<p>This section (formerly 1.3.4) now specifies that HTML examples lacking DOCTYPE
declarations are SGML Text Entities conforming to the HTML 4.01 Strict DTD [HTML4].
The markup for many examples has been reformulated to either include a DOCTYPE or
conform to this definition.</p>
<h3 id="c1.5"><a name="q21.15">C.2.8 </a><a href="about.html#acknowledgements">Section 1.5 Acknowledgments</a></h3>
<p>This section (formerly 1.4) has been updated to reflect contributions to CSS2.1
and has been marked non-normative.<p>
<h3 id="c3.2"><a name="q21.16">C.2.9 </a><a href="conform.html#conformance">Section 3.2
Conformance</a></h3>
<p>Support for user style sheets is now required (in most cases),
rather than just recommended.
<p>Support for turning of author style sheets is now required.</p>
<p>Application of CSS properties to form controls is explicitly undefined.
Authors are recommended to treat form control styling capabilities in UAs
as experimental.</p>
<h3 id="c3.3"><a name="q21.17">C.2.10 </a><a href="conform.html#errors">Section 3.3
Error Conditions</a></h3>
<p>This section changed to say that error handling <em>is</em> specified
in most cases.</p>
<h3 id="c4.1.1"><a name="q21.18">C.2.11 </a><a href="syndata.html#tokenization">Section 4.1.1 Tokenization</a></h3>
<p>Added INVALID token and rules for its definition.</p>
<p>An optional hyphen, "-", is now allowed at the beginning of an "ident"
for vendor extensions. (See section 4.1.2.1)</p>
<p id="underscore">The underscore character
("_") is allowed in identifiers. The definitions of the lexical
macros "nmstart" and "nmchar" now include it. See also section
4.1.2.1 (Vendor extensions).</p>
<p>The "escape" macro has been modified to allow the escaping of any
character except newlines, form feeds, and hex digits (to avoid
conflict with Unicode escapes).</p>
<p>Modified "string1" and "string2" macros by defining allowed characters
through excluding disallowed characters. This allows invisible ASCII
characters to be included in a string.</p>
<h3 id="c4.1.3"><a name="q21.19">C.2.12 </a><a href="syndata.html#characters">Section 4.1.3
Characters and case</a></h3>
<p>Updated prose about identifiers (second bullet point) to match changes
in the tokenization (above).</p>
<p>Excluded null (0x0) character from CSS numerical escapes and indicate that
it is undefined in CSS2.1 what happens if such a character is encountered.</p>
<p>Allowed the use of U+FFFD as a replacement for characters outside the
range allowed by Unicode.</p>
<p>CSS is no longer case-insensitive, but case-sensitive with
exceptions. Changed "All CSS style sheets are case-insensitive, except
for parts that are not under the control of CSS" to "All CSS syntax is
case-insensitive within the ASCII range (i.e., [a-z] and [A-Z] are
equivalent), except for parts that are not under the control of CSS."
See also the change to case-sensitivity of counters in <a
href="#c4.3.5">4.3.5.</a>
<h3 id="c4.2"><a name="q21.20">C.2.13 </a><a href="syndata.html#parsing-errors">Section 4.2
Rules for handling parsing errors</a></h3>
<p>Defined parsing in the cases of Malformed Declarations,
Unexpected End of Stylesheet, and Unexpected End of String.</p>
<h3 id="c4.3"><a name="q21.21">C.2.14 </a><a href="syndata.html#values">Section 4.3
Values</a></h3>
<p>Sections 4.3.7 (Angles), 4.3.8 (Times), and 4.3.9 (Frequencies)
have been moved to the informative Appendix A.</p>
<h3 id="c4.3.2"><a name="q21.22">C.2.15 </a><a href="syndata.html#length-units">Section 4.3.2
Lengths</a></h3>
<p>Added a paragraph on heuristics for finding the x-height of a font.</p>
<h3 id="c4.3.4"><a name="q21.23">C.2.16 </a><a href="syndata.html#uri">Section 4.3.4
URLs and URIs</a></h3>
<p>Updated URI references to RFC3986.</p>
<h3 id="c4.3.5"><a name="q21.24">C.2.17 </a><a href="syndata.html#counter">Section 4.3.5
Counters</a></h3>
<p>Changed "Counters are denoted by identifiers" to "Counters are
denoted by <ins>case-sensitive</ins> identifiers" (see also the
change to case-sensitivity in <a href="#c4.1.3">4.1.3</a>).
<h3 id="c4.3.6"><a name="q21.25">C.2.18 </a><a href="syndata.html#color-units">Section 4.3.6
Colors</a></h3>
<p>Defined the numeric values corresponding to color keywords instead
of referencing HTML4 for those values.</p>
<p>UAs are now allowed to intelligently map colors outside the gamut
into the gamut instead of simply clipping them into the range of the
gamut.</p>
<h3 id="c4.3.8"><a name="q21.26">C.2.19 </a><a href="syndata.html#unsupported-values">Section 4.3.8
Unsupported Values</a></h3>
<p>Added this section to recommend that unsupported properties and values
be ignored as if they were invalid.</p>
<h3 id="c4.4"><a name="q21.27">C.2.20 </a><a href="syndata.html#charset">Section 4.4
CSS style sheet representation</a></h3>
<p>Changed character encoding detection rule 2 to include a BOM and
referred to additional rules below.</p>
<p>Added rule 4 to provide for use of the referring style sheet
or document's character encoding.</p>
<p>Added rule 5 to require falling back to UTF-8.</p>
<p>Removed the restriction on using @charset in embedded style sheets.</p>
<p>Allowed a BOM to precede the @charset rule.</p>
<p>Added requirement that @charset rule must be a literal '@charset"...";',
not a CSS-syntax equivalent.</p>
<p>Added requirement to support for UTF-8 at minimum.</p>
<p>Specified that any @charset rule not at the beginning of the style sheet
must be ignored.</p>
<p>Removed note on theoretical problem with @charset problem and precisely
defined rules for character encoding detection based on @charset and/or BOM.</p>
<p>Specified that UAs must ignore style sheets in unknown encodings.</p>
<h3 id="c5.8.1"><a name="q21.28">C.2.21 </a><a href="selector.html#matching-attrs">Section 5.8.1 Matching
attributes and attribute values</a></h3>
<p>BCP 47 replaces RFC 1766.
<h3 id="c5.8.3"><a name="q21.29">C.2.22 </a><a href="selector.html#class-html">Section 5.8.3 Class
selectors</a></h3>
<p>Class selectors are allowed for other formats than HTML.
<p>Added a note about matching classes in formats with multiple class
attributes per element. The behavior is non-normative, because, at the
time of writing, there exist no such formats.
<h3 id="c5.9"><a name="q21.30">C.2.23 </a><a href="selector.html#id-selectors">Section 5.9 ID
selectors</a></h3>
<p>Specified how to match elements with two or more ID attributes.
<h3 id="c5.10"><a name="q21.31">C.2.24 </a><a href="selector.html#pseudo-elements">Section 5.10
Pseudo-elements and pseudo-classes</a></h3>
<p>Removed exception for HTML UAs that allowed them (and only them) to
ignore ':first-letter' and ':first-line'.
<h3 id="c5.11.2"><a name="q21.32">C.2.25 </a><a href="selector.html#link-pseudo-classes">Section 5.11.2
The link pseudo-classes: :link and :visited</a></h3>
<p>UAs may return a :visited link to :link status at some point. (This
was previously a note, but is now normative.)
<p>Added a note about privacy concerns with link pseudo classes and
allowed UAs to treat :visited as :link.
<h3 id="c5.11.4"><a name="q21.33">C.2.26 </a><a href="selector.html#lang">Section 5.11.4 The
language pseudo-class: :lang</a></h3>
<p>The identifier C in ':lang(C)' need not be a valid language code,
but it must not be empty.
<h3 id="c5.12.1"><a name="q21.34">C.2.27 </a><a href="selector.html#first-line-pseudo">Section
5.12.1 The :first-line pseudo-element</a></h3>
<p>':first-line' also applies to inline blocks, table captions and
table cells. Added a definition of "first formatted line" to make the
rules about which line is the first line more precise.
<p>UAs are no longer forbidden from applying more properties than the
given list.
<h3 id="c5.12.2"><a name="q21.35">C.2.28 </a><a href="selector.html#first-letter">Section 5.12.2
The :first-letter pseudo-element</a></h3>
<p>More precise definition of first letter. Added rules for cases
where the first letter is in an inline block or table cell. Added
rules for cases when preceding punctuation is in a different element
from the first letter itself.
<p>UAs may apply other properties to first letters than the given
list.
<p>Unicode character classes Pi and Pf added to the definition of
punctuation.
<h3 id="c6.1"><a name="q21.36">C.2.29 </a><a href="cascade.html#value-stages">Section 6.1 Specified, computed, and actual values</a></h3>
<p>Redefined "computed value" and created the concept of "used value"
so that inheritance can be performed without laying out the document.
This change has the effect of allowing (requiring) percentages to be inherited
as percentages and affects many other layout calculations throughout the spec.</p>
<p>Since computed value of a property can now also be a percentage. In
particular, the following properties now inherit the percentage if the
specified value is a percentage:
<ul>
<li>background-position
<li>bottom, left, right, top
<li>height, width
<li>margin-bottom, margin-left, margin-right, margin-top,
<li>min-height, min-width
<li>padding-bottom, padding-left, padding-right, padding-top
<li>text-indent
</ul>
<p>Note that only 'text-indent' inherits by default, the others only
inherit if the 'inherit' keyword is specified.
<h3 id="c6.4.1"><a name="q21.37">C.2.30 </a><a href="cascade.html#cascading-order">Section 6.4.1 Cascading order</a></h3>
<p>Changed suggestion that user be able to turn off author styles to a requirement.</p>
<h3 id="c6.4.3"><a name="q21.38">C.2.31 </a><a href="cascade.html#specificity">Section 6.4.3
Calculating a selector's specificity</a></h3>
<p>The "style" attribute now has a higher specificity than any style
rule.</p>
<p>Pseudo-elements are now counted with elements in calculating a
a selector's specificity.</p>
<h3 id="c6.4.4"><a name="q21.39">C.2.32 </a><a href="cascade.html#preshint">Section 6.4.4 Precedence
of non-CSS presentational hints</a></h3>
<p>"Non-CSS presentational hints" no longer exist, with the exception
of a small set of attributes in HTML.</p>
<h3 id="c7.3"><a name="q21.40">C.2.33 </a><a href="media.html#media-types">Section 7.3
Recognized Media Types</a></h3>
<p>Added 'speech' media type.</p>
<p>Marked "Media" field in property descriptions informative.</p>
<h3 id="c7.3.1"><a name="q21.41">C.2.34 </a><a href="media.html#media-types">Section 7.3.1
Media Groups</a></h3>
<p>Marked this section informative.</p>
<p>Added sound to 'handheld' in media type/media group table.</p>
<p>Changed 'tactile' to be both 'static' and 'interactive'.</p>
<h3 id="c8.3"><a name="q21.42">C.2.35 </a><a href="box.html#margin-properties">Section 8.3 Margin properties</a></h3>
<p>If the containing block's width depends on an element with percentage
margins, then the resulting layout is undefined in CSS 2.1.</p>
<h3 id="c8.3.1"><a name="q21.43">C.2.36 </a><a href="box.html#collapsing-margins">Section 8.3.1 Collapsing margins</a></h3>
<p>In the definition of "collapsing margins", added "non-empty content"
and "clearance" to the parenthetical list of things that prevent consecutive
margins from being adjoining.</p>
<p>Vertical margins of elements with 'overflow' other than 'visible' no longer
collapse with their in-flow children.</p>
<p>Defined how margins collapse through an element with adjoining top and
bottom margins.</p>
<p>Added that margins of the root element's box do not collapse.</p>
<p>More rigorously <a href="box.html#what-is-adjoining">defined "adjoining" for margin collapsing</a>.</p>
<p>Sixth bullet, second sub-bullet: to find the position of the top
border edge, assume the element has a <em>bottom</em> (rather than
top) border.
<p>Margins of relatively positioned elements <em>do</em> sometimes
collapse.
<h3 id="c8.4"><a name="q21.44">C.2.37 </a><a href="box.html#padding-properties">Section 8.4 Padding properties</a></h3>
<p>If the containing block's width depends on an element with percentage
padding, then the resulting layout is undefined in CSS 2.1.</p>
<h3 id="c8.5.2"><a name="q21.45">C.2.38 </a><a href="box.html#border-color-properties">Section 8.5.2 Border color</a></h3>
<p>'transparent' can now be specified independently for each border side,
on par with <color>.</p>
<h3 id="c8.5.3"><a name="q21.46">C.2.39 </a><a href="box.html#border-style-properties">Section 8.5.3 Border style</a></h3>
<p>3D border styles ('groove', 'ridge', 'inset', 'outset') now depend on the
corresponding border-color rather than on 'color'.</p>
<h3 id="c8.6"><a name="q21.47">C.2.40 </a><a href="box.html#bidi-box-model">Section 8.6 The box model for inline elements in bidirectional context</a></h3>
<p>Added this new section to specify layout of inline boxes when affected by bidi.</p>
<h3 id="c9.1.2"><a name="q21.48">C.2.41 </a><a href="visuren.html#containing-block">Section 9.1.2
Containing blocks</a></h3>