44
55<title>Cascading Style Sheets Level 2 Revision 1 (CSS 2.1) Specification</title>
66<link rel="stylesheet" href="style/default.css" type="text/css">
7- <link rel="stylesheet" href="http://www.w3.org/StyleSheets/TR/W3C-PR .css" type="text/css">
7+ <link rel="stylesheet" href="http://www.w3.org/StyleSheets/TR/W3C-ED .css" type="text/css">
88<link rel="next" href="about.html">
99<link rel="contents" href="cover.html#minitoc">
1010<link rel="CSS-properties" href="propidx.html" title="properties">
1111<link rel="index" href="indexlist.html" title="index">
1212<link rel="first" href="cover.html">
13+ <script src="./annotate.js#CSS21_DEV" type="text/javascript" defer></script>
1314
1415<body>
1516
2021 src="http://www.w3.org/Icons/w3c_home" width="72"></a>
2122
2223 <h1 id="title">Cascading Style Sheets Level 2 Revision 1 (CSS 2.1) Specification</h1>
23- <h2 id="W3C-doctype">W3C Proposed Recommendation 12 April 2011 </h2>
24+ <h2 id="W3C-doctype">W3C Editors Draft DD MMMMM YYYY </h2>
2425
2526 <dl>
2627 <dt>This version:
27- <dd><a href="http://www.w3.org/TR/2011/PR -CSS2-20110412 ">
28- http://www.w3.org/TR/2011/PR -CSS2-20110412 </a>
28+ <dd><a href="http://www.w3.org/TR/YYYY/ED -CSS2-YYYYMMDD ">
29+ http://www.w3.org/TR/YYYY/ED -CSS2-YYYYMMDD </a>
2930 <dt>Latest version:
3031 <dd><a href="http://www.w3.org/TR/CSS2">
3132 http://www.w3.org/TR/CSS2</a>
3233 <dt>Previous versions:
33- <dd><a href="http://www.w3.org/TR/2010/WD -CSS2-20101207 ">
34- http://www.w3.org/TR/2010/WD -CSS2-20101207 </a>
34+ <dd><a href="http://www.w3.org/TR/2011/PR -CSS2-20110412 ">
35+ http://www.w3.org/TR/2011/PR -CSS2-20110412 </a>
3536 <dd><a href="http://www.w3.org/TR/2008/REC-CSS2-20080411/">
3637 http://www.w3.org/TR/2008/REC-CSS2-20080411/</a>
3738 <dt>Editors:
@@ -50,7 +51,7 @@ <h2 id="W3C-doctype">W3C Proposed Recommendation 12 April 2011</h2>
5051 </dl>
5152
5253 <p>Please refer to the <a
53- href="http://www.w3.org/Style/css2-updates/PR -CSS2-20110412 -errata.html"><strong>
54+ href="http://www.w3.org/Style/css2-updates/ED -CSS2-YYYYMMDD -errata.html"><strong>
5455 errata</strong></a> for this document.
5556
5657 <p>This document is also available in these non-normative formats:
@@ -2182,7 +2183,7 @@ <H2>2.4 <a name="design-principles">CSS design principles</a></H2>
21822183</UL>
21832184
21842185<div class="note"><P> <em><strong>Note.</strong> For more information
2185- about designing accessible documents using CSS and HTML, see <a href="refs.html#ref-WAI-PAGEAUTH" rel="biblioentry" class="noxref"><span class="informref">[WAI-PAGEAUTH]</span></a> .</em>
2186+ about designing accessible documents using CSS and HTML, see [[-WCAG20]] .</em>
21862187</div>
21872188</UL>
21882189
@@ -3529,7 +3530,7 @@ <h3>4.3.2 <a name="length-units">Lengths</a></h3>
35293530<ul>
35303531<li><strong>em</strong>: the <a href="fonts.html#propdef-font-size" class="noxref"><span class="propinst-font-size">'font-size'</span></a> of the relevant font</li>
35313532<li><strong>ex</strong>: the <span class="descinst">'x-height'</span> of the relevant font</li>
3532- <li></li>
3533+
35333534</ul>
35343535
35353536<div class="example"><P style="display:none">Example(s):</P>
@@ -4771,7 +4772,7 @@ <h3>5.8.3 <a name="class-html">Class selectors</a></h3>
47714772describes the <a
47724773href="http://www.w3.org/TR/2003/REC-SVG11-20030114/styling.html#ClassAttribute">SVG
47734774"class" attribute</a> and how a UA should interpret it, and
4774- similarly MathML 2 .0 <a href="refs.html#ref-MATH20 " rel="biblioentry" class="noxref"><span class="informref">[MATH20 ]</span></a> describes the <a
4775+ similarly MathML 3 .0 <a href="refs.html#ref-MATH30 " rel="biblioentry" class="noxref"><span class="informref">[MATH30 ]</span></a> describes the <a
47754776href="http://www.w3.org/TR/MathML2/chapter2.html#fund.globatt">MathML
47764777"class" attribute</a>.)
47774778
@@ -19598,24 +19599,22 @@ <H2>B.1 <a name="normative">Normative references</a></H2>
1959819599
1959919600<dt><strong><a name="ref-UAX9" class="normref">[UAX9]</a></strong>
1960019601<dd>"Unicode Bidirectional Algorithm", Mark Davis. (Unicode Standard
19601- Annex #9.) 22 September 2009 .<br> Available at <a
19602+ Annex #9.) 27 September 2010 .<br> Available at <a
1960219603href="http://www.unicode.org/reports/tr9/">
1960319604http://www.unicode.org/reports/tr9/</a>
1960419605
19605- <dt><strong><a name="ref-UNICODE" class="normref">[UNICODE]</a></strong>
19606- <dd>The Unicode Consortium. The Unicode Standard, Version 4.1.0,
19607- defined by: The Unicode Standard, Version 4.0 (Boston, MA,
19608- Addison-Wesley, 2003. ISBN 0-321-18578-1), as amended by <a
19609- href="http://www.unicode.org/versions/Unicode4.0.1/"> Unicode
19610- 4.0.1</a> and <a href="http://www.unicode.org/versions/Unicode4.1.0/">
19611- Unicode 4.1.0</a> and as updated from time to time by the publication
19606+ <dt><strong><a name="ref-UNICODE"
19607+ class="normref">[UNICODE]</a></strong> <dd>The Unicode Consortium. The
19608+ Unicode Standard, Version 6.0.0, (Mountain View, CA: The Unicode
19609+ Consortium, 2011. ISBN 978-1-936213-01-6)
19610+ and as updated from time to time by the publication
1961219611of new versions. (See <a
1961319612href="http://www.unicode.org/unicode/standard/versions/">
1961419613http://www.unicode.org/unicode/standard/versions/</a> for the latest
1961519614version and additional information on versions of the standard and of
1961619615the Unicode Character Database).<br> Available at <a
19617- href="http://www.unicode.org/versions/Unicode4.1 .0/">
19618- http://www.unicode.org/versions/Unicode4.1 .0/</a>
19616+ href="http://www.unicode.org/versions/Unicode6.0 .0/">
19617+ http://www.unicode.org/versions/Unicode6.0 .0/</a>
1961919618
1962019619<dt><strong><a name="ref-XML10" class="normref">[XML10]</a></strong>
1962119620<dd>"Extensible Markup Language (XML) 1.0 (fifth edition)"
@@ -19649,10 +19648,10 @@ <H2>B.2 <a name="informative">Informative references</a></H2>
1964919648http://www.w3.org/TR/2008/REC-CSS2-20080411/</a>
1965019649
1965119650<dt><strong><a name="ref-CSS3COLOR" class="informref">[CSS3COLOR]</a></strong>
19652- <dd>"CSS3 Color Module," Tantek Çelik, Chris Lilley, 14 May 2003 ,
19653- W3C Candidate Recommendation. Available at <a
19654- href="http://www.w3.org/TR/2003/CR -css3-color-20030514 /">
19655- http://www.w3.org/TR/2003/CR -css3-color-20030514 /</a>
19651+ <dd>"CSS3 Color Module," Tantek Çelik, Chris Lilley, 28 October 2010 ,
19652+ W3C Proposed Recommendation. Available at <a
19653+ href="http://www.w3.org/TR/2010/PR -css3-color-20101028 /">
19654+ http://www.w3.org/TR/2010/PR -css3-color-20101028 /</a>
1965619655
1965719656<dt><strong><a name="ref-CSS3LIST" class="informref">[CSS3LIST]</a></strong>
1965819657<dd>"CSS3 module: lists," Tantek Çelik, Ian Hickson, 7 November 2002,
@@ -19662,16 +19661,16 @@ <H2>B.2 <a name="informative">Informative references</a></H2>
1966219661
1966319662<dt><strong><a name="ref-CSS3SEL"
1966419663class="informref">[CSS3SEL]</a></strong> <dd>"Selectors", D. Glazman,
19665- T. Çelik, I. Hickson, 13 November 2001 <br>
19666- Available at <a href="http://www.w3.org/TR/2001/CR -css3-selectors-20011113 /">
19667- http://www.w3.org/TR/2001/CR -css3-selectors-20011113 </a>
19664+ T. Çelik, I. Hickson, 15 December 2009 <br>
19665+ Available at <a href="http://www.w3.org/TR/2009/PR -css3-selectors-20091215 /">
19666+ http://www.w3.org/TR/2009/PR -css3-selectors-20091215/ </a>
1966819667
1966919668<dt><strong><a name="ref-CSS3SPEECH"
1967019669class="informref">[CSS3SPEECH]</a></strong> <dd>"CSS3 Speech Module",
19671- David Raggett, Daniel Glazman, Claudio Santambrogio, 14 May 2003 , W3C
19670+ David Raggett, Daniel Glazman, Claudio Santambrogio, Daniel Weck, 19 April 2011 , W3C
1967219671Working Draft (work in progress). Available
19673- at <a href="http://www.w3.org/TR/2004 /WD-css3-speech-20041216 /">
19674- http://www.w3.org/TR/2004 /WD-css3-speech-20041216 </a>
19672+ at <a href="http://www.w3.org/TR/2011 /WD-css3-speech-20110419 /">
19673+ http://www.w3.org/TR/2011 /WD-css3-speech-20110419/ </a>
1967519674
1967619675<dt><strong><a name="ref-DOM-LEVEL-3-CORE"
1967719676class="informref">[DOM-LEVEL-3-CORE]</a></strong> <dd>"Document Object
@@ -19680,19 +19679,19 @@ <H2>B.2 <a name="informative">Informative references</a></H2>
1968019679href="http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/">
1968119680http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/</a>.
1968219681
19683- <dt><strong><a name="ref-MATH20 "
19684- class="informref">[MATH20 ]</a></strong> <dd>"Mathematical Markup
19685- Language (MathML) Version 2 .0", D. Carlisle, P. Ion, R. Miner, N.
19686- Poppelier, 21 February 2001 <br>
19687- Available at <a href="http://www.w3.org/TR/2001 /REC-MathML2-20010221 /">
19688- http://www.w3.org/TR/2001 /REC-MathML2-20010221 </a>
19682+ <dt><strong><a name="ref-MATH30 "
19683+ class="informref">[MATH30 ]</a></strong> <dd>"Mathematical Markup
19684+ Language (MathML) Version 3 .0", D. Carlisle, P. Ion, R. Miner,
19685+ 21 October 2010 <br>
19686+ Available at <a href="http://www.w3.org/TR/2010 /REC-MathML3-20101021 /">
19687+ http://www.w3.org/TR/2010 /REC-MathML3-20101021/ </a>
1968919688
1969019689<dt><strong><a name="ref-MEDIAQ" class="informref">[MEDIAQ]</a></strong>
1969119690<dd>"Media Queries", Håkon Wium Lie, Tantek Çelik, Daniel Glazman,
19692- Anne van Kesteren, 23 April 2009 <br>
19691+ Anne van Kesteren, 27 July 2010 <br>
1969319692(Work in progress.) Available at <a
19694- href="http://www.w3.org/TR/2009 /CR-css3-mediaqueries-20090423 /">
19695- http://www.w3.org/TR/2009 /CR-css3-mediaqueries-20090423 /</a>
19693+ href="http://www.w3.org/TR/2010 /CR-css3-mediaqueries-20100727 /">
19694+ http://www.w3.org/TR/2010 /CR-css3-mediaqueries-20100727 /</a>
1969619695
1969719696<dt><strong><a name="ref-P3P" class="informref">[P3P]</a></strong>
1969819697<dd>"The Platform for Privacy Preferences 1.0 (P3P1.0) Specification",
@@ -19715,29 +19714,30 @@ <H2>B.2 <a name="informative">Informative references</a></H2>
1971519714Available at <a href="http://www.w3.org/TR/2003/REC-SVG11-20030114/">
1971619715http://www.w3.org/TR/2003/REC-SVG11-20030114</a>
1971719716
19718- <dt><strong><a name="ref-WAI-PAGEAUTH"
19719- class="informref">[WAI-PAGEAUTH]</a></strong>
19720- <dd>"Web Content Accessibility Guidelines", W. Chisholm,
19721- G. Vanderheiden, I. Jacobs eds.<BR>
19722- Available at: <a href="http://www.w3.org/TR/WAI-WEBCONTENT/">http://www.w3.org/TR/WAI-WEBCONTENT/</a>.
19717+ <dt><strong><a name="ref-WCAG20"
19718+ class="informref">[WVAG20]</a></strong>
19719+ <dd>"Web Content Accessibility Guidelines (WCAG) 2.0", Ben Caldwell,
19720+ Michael Cooper, Loretta Guarino Reid, Gregg Vanderheiden, 11 December 2008.<BR>
19721+ Available at: <a href="http://www.w3.org/TR/2008/REC-WCAG20-20081211/">
19722+ http://www.w3.org/TR/2008/REC-WCAG20-20081211/</a>.
1972319723
1972419724<dt><strong><a name="ref-XHTML" class="informref">[XHTML]</a></strong>
1972519725<dd>"XHTML 1.0 The Extensible HyperText Markup Language", various
1972619726authors,<br> Available at: <a
1972719727href="http://www.w3.org/TR/xhtml1/">http://www.w3.org/TR/xhtml1/</a>.
1972819728
1972919729<dt><strong><a name="ref-XMLID" class="informref">[XMLID]</a></strong>
19730- <dd>"xml:id Version 1.0", J. Marsh, D. Veillard N. Walsh, 9 November
19731- 2004 , W3C working draft (work in progress) . Available at: <a
19732- href="http://www.w3.org/TR/2004/WD -xml-id-20041109 /">
19733- http://www.w3.org/TR/2004/WD -xml-id-20041109 /</a>.
19730+ <dd>"xml:id Version 1.0", J. Marsh, D. Veillard N. Walsh, 9 September
19731+ 2005 , W3C Recommendation . Available at: <a
19732+ href="http://www.w3.org/TR/2005/REC -xml-id-20050909 /">
19733+ http://www.w3.org/TR/2005/REC -xml-id-20050909 /</a>.
1973419734
1973519735<dt><strong><a name="ref-XMLNAMESPACES"
1973619736class="informref">[XMLNAMESPACES]</a></strong>
19737- <dd>"Namespaces in XML", T. Bray, D. Hollander, A. Layman,<br>
19737+ <dd>"Namespaces in XML 1.0 (third edition) ", T. Bray, D. Hollander, A. Layman, R. Tobin, H. S. Thompson, 8 December 2009 <br>
1973819738Available at: <a
19739- href="http://www.w3.org/TR/1999 /REC-xml-names-19990114 /">
19740- http://www.w3.org/TR/1999 /REC-xml-names-19990114 </a>.
19739+ href="http://www.w3.org/TR/2009 /REC-xml-names-20091208 /">
19740+ http://www.w3.org/TR/2009 /REC-xml-names-20091208/ </a>.
1974119741
1974219742</dl>
1974319743<hr class="navbar">
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