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[css-background] Add definition for ''none'' keyword.
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‎css-backgrounds/Overview.html‎

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<meta content="CSS Backgrounds and Borders Module Level 3"
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name=dcterms.title>
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<meta content=text name=dcterms.type>
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<meta content=2014-08-13 name=dcterms.date>
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<meta content=2015-08-14 name=dcterms.date>
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<meta content="Bert Bos" name=dcterms.creator>
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<meta content="Elika J. Etemad" name=dcterms.creator>
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<meta content="Brad Kemper" name=dcterms.creator>
@@ -30,7 +30,7 @@
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#box-shadow-samples td { background: white; color: black; }
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.css::before, .css::after, .property::before, .property::after { content: none !important;}
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</style>
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<link href="https://www.w3.org/StyleSheets/TR/W3C-ED.css" rel=stylesheet
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<link href="https://www.w3.org/StyleSheets/TR/W3C-WD.css" rel=stylesheet
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type="text/css">
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<script defer=defer
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src="https://test.csswg.org/harness/annotate.js#css-backgrounds-3_dev"
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<body>
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<div class=head> <!--begin-logo-->
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<p><a href="http://www.w3.org/"><img alt=W3C height=48
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src="https://www.w3.org/Icons/w3c_home" width=72></a> <!--end-logo-->
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src="http://www.w3.org/Icons/w3c_home" width=72></a> <!--end-logo-->
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<h1>CSS Backgrounds and Borders Module Level 3</h1>
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<h2 class="no-num no-toc">Editor's Draft 13 August 2014</h2>
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<h2 class="no-num no-toc">Editor's Draft 14 August 2015</h2>
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<dl>
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<dt>This version:
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<dt>Previous version:
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<dd><a
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href="http://www.w3.org/TR/2014/WD-css3-background-20140116/">http://www.w3.org/TR/2014/WD-css3-background-20140116/</a>
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href="http://www.w3.org/TR/2014/CR-css3-background-20140909/">http://www.w3.org/TR/2014/CR-css3-background-20140909/</a>
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<dt>Issue Tracking:
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@@ -99,14 +99,14 @@ <h2 class="no-num no-toc">Editor's Draft 13 August 2014</h2>
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<!--begin-copyright-->
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<p class=copyright><a
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href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright"
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rel=license>Copyright</a> © 2014 <a href="http://www.w3.org/"><abbr
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rel=license>Copyright</a> © 2015 <a href="http://www.w3.org/"><abbr
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title="World Wide Web Consortium">W3C</abbr></a><sup>®</sup> (<a
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href="http://www.csail.mit.edu/"><abbr
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title="Massachusetts Institute of Technology">MIT</abbr></a>, <a
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href="http://www.ercim.eu/"><abbr
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title="European Research Consortium for Informatics and Mathematics">ERCIM</abbr></a>,
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<a href="http://www.keio.ac.jp/">Keio</a>, <a
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href="http://ev.buaa.edu.cn/">Beihang</a>), All Rights Reserved. W3C <a
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href="http://ev.buaa.edu.cn/">Beihang</a>). W3C <a
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href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>,
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<a
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href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a>
@@ -371,21 +371,24 @@ <h2 class="no-num no-toc" id=contents>Table of contents</h2>
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<li><a href="#changes"><span class=secno>9. </span> Changes</a>
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<ul class=toc>
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<li><a href="#changes-2014-07"><span class=secno>9.1. </span> Changes
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since the 9 September 2014 Candidate Recommendation</a>
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<li><a href="#changes-2014-07"><span class=secno>9.2. </span> Changes
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since the 4 February 2014 Last Call Working Draft</a>
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<li><a href="#changes-2012-07"><span class=secno>9.2. </span> Changes
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<li><a href="#changes-2012-07"><span class=secno>9.3. </span> Changes
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since the 24 July 2012 Candidate Recommendation</a>
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<li><a href="#changes-2012-04"><span class=secno>9.3. </span> Changes
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<li><a href="#changes-2012-04"><span class=secno>9.4. </span> Changes
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since the 17 April 2012 Candidate Recommendation</a>
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<li><a href="#changes-2012LC"><span class=secno>9.4. </span> Changes
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<li><a href="#changes-2012LC"><span class=secno>9.5. </span> Changes
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since the 14 February 2012 “Last Call” Working Draft</a>
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<li><a href="#changes-2011"><span class=secno>9.5. </span> Changes Since
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<li><a href="#changes-2011"><span class=secno>9.6. </span> Changes Since
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the 15 February 2011 Candidate Recommendation</a>
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<li><a href="#changes-2009"><span class=secno>9.6. </span> Changes Since
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<li><a href="#changes-2009"><span class=secno>9.7. </span> Changes Since
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the 17 December 2009 Candidate Recommendation</a>
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</ul>
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number of comma-separated values in the ‘<a
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href="#background-image"><code
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class=property>background-image</code></a>’ property. Note that a value
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of ‘<code class=property>none</code>’ still creates a layer.
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of ‘<a href="#box-shadow-none"><code class=property>none</code></a>’
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still creates a layer.
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<p>Each of the images is sized, positioned, and tiled according to the
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corresponding value in the other background properties. The lists are
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class=html>html</code> element <a href="#ref-XHTML11"
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rel=biblioentry>[XHTML11]<!--{{!XHTML11}}--></a>: if the computed value of
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‘<a href="#background-image"><code
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class=property>background-image</code></a>’ on the root element is
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‘<code class=css>none</code>’ and its ‘<a
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class=property>background-image</code></a>’ on the root element is ‘<a
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href="#box-shadow-none"><code class=css>none</code></a>’ and its ‘<a
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href="#background-color"><code
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class=property>background-color</code></a>’ is ‘<code
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class=css>transparent</code>’, user agents must instead propagate the
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<dt><dfn id=hidden>‘<code class=css>hidden</code>’</dfn>
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<dd> Same as ‘<code class=property>none</code>’, but has different
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behavior in the border conflict resolution rules for border-collapsed
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tables <a href="#ref-CSS21" rel=biblioentry>[CSS21]<!--{{!CSS21}}--></a>.
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<dd> Same as ‘<a href="#box-shadow-none"><code
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class=property>none</code></a>’, but has different behavior in the
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border conflict resolution rules for border-collapsed tables <a
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href="#ref-CSS21" rel=biblioentry>[CSS21]<!--{{!CSS21}}--></a>.
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<dt><dfn id=dotted>‘<code class=css>dotted</code>’</dfn>
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<th>Computed value:
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<td>absolute length; ‘<code class=css>0</code>’ if the border style
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is ‘<code class=property>none</code>’ or ‘<a href="#hidden"><code
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is ‘<a href="#box-shadow-none"><code
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class=property>none</code></a>’ or ‘<a href="#hidden"><code
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class=property>hidden</code></a>’
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<tr>
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as top; if right is missing, it is the same as top.
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<p class=note>Note that the initial width is ‘<code
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class=property>medium</code>’, but the initial style is ‘<code
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class=property>none</code>’ and therefore the used width is 0.
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class=property>medium</code>’, but the initial style is ‘<a
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href="#box-shadow-none"><code class=property>none</code></a>’ and
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therefore the used width is 0.
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<p>When the used width of the border is 0, we say that the border is
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absent.
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<tr>
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<th>Computed value:
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<td>‘<code class=css>none</code>’ or the image with its URI made
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absolute
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<td>‘<a href="#box-shadow-none"><code class=css>none</code></a>’ or
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the image with its URI made absolute
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<tr>
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<th>Animatable:
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class=css>fill</code></a>’ keyword in ‘<a
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href="#border-image-slice"><code
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class=property>border-image-slice</code></a>’, as an additional image
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backdrop for the element. If the value is ‘<code
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class=css>none</code>’ or if the image cannot be displayed (or the
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property doesn't apply), the border styles will be used; otherwise the
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element's ‘<a href="#border-style"><code
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backdrop for the element. If the value is ‘<a
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href="#box-shadow-none"><code class=css>none</code></a>’ or if the image
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cannot be displayed (or the property doesn't apply), the border styles
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will be used; otherwise the element's ‘<a href="#border-style"><code
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class=property>border-style</code></a>’ borders are not drawn and the
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border image is drawn as described in the sections below.
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<p>The ‘<a href="#box-shadow"><code
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class=property>box-shadow</code></a>’ property attaches one or more
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drop-shadows to the box. The property takes a comma-separated list of
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shadows, ordered front to back. Each shadow is given as a <a
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drop-shadows to the box. The property accepts either the <dfn
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id=box-shadow-none>‘<code class=css>none</code>’</dfn> value, which
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indicates no shadows, or a comma-separated list of shadows, ordered front
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to back.
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<p>Each shadow is given as a <a
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href="#shadow"><var>&lt;shadow&gt;</var></a>, represented by 2-4
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length values, an optional color, and an optional ‘<a
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href="#inset"><code class=css>inset</code></a>’ keyword. Omitted lengths
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<h2 id=changes><span class=secno>9. </span> Changes</h2>
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<h3 id=changes-2014-07><span class=secno>9.1. </span> Changes since the 4
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<h3 id=changes-2014-07><span class=secno>9.1. </span> Changes since the 9
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September 2014 Candidate Recommendation</h3>
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<p>The following (non-trivial) changes were made to this specification
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since the <a
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href="http://www.w3.org/TR/2014/CR-css3-background-20140909/">9 September
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2014 Candidate Recommendation</a>:
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<ul>
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<li>Added missing definition of ‘<code class=css>box-shadow:
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none</code>’. (Apparently this was obvious enough that nobody noticed
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it was missing until now.)
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</ul>
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<h3 id=changes-2014-07><span class=secno>9.2. </span> Changes since the 4
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February 2014 Last Call Working Draft</h3>
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<p>The following (non-trivial) changes were made to this specification
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href="http://dev.w3.org/csswg/css-backgrounds-3/issues-lc-2014">Disposition
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of Comments</a> is available.
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<h3 id=changes-2012-07><span class=secno>9.2. </span> Changes since the 24
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<h3 id=changes-2012-07><span class=secno>9.3. </span> Changes since the 24
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July 2012 Candidate Recommendation</h3>
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<p>The following (non-trivial) changes were made to this specification
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class=property>box-shadow</code></a>’.
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<li>Clarify that a ‘<a href="#border-style"><code
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class=property>border-style</code></a>’ of ‘<code
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class=css>none</code>’ also implies an initial ‘<a
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href="#border-image-width"><code
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class=property>border-style</code></a>’ of ‘<a
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href="#box-shadow-none"><code class=css>none</code></a>’ also implies
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an initial ‘<a href="#border-image-width"><code
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class=property>border-image-width</code></a>’ of zero (since ‘<a
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href="#border-image-width"><code
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class=property>border-image-width</code></a>’ is initially set to the
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<li>Added “Animatable” values to each property definition table.
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</ul>
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<h3 id=changes-2012-04><span class=secno>9.3. </span> Changes since the 17
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<h3 id=changes-2012-04><span class=secno>9.4. </span> Changes since the 17
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April 2012 Candidate Recommendation</h3>
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<p>The following (non-editorial) changes were made to this specification
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the width/height of the box might need to be increased.
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</ul>
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<h3 id=changes-2012LC><span class=secno>9.4. </span> Changes since the 14
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<h3 id=changes-2012LC><span class=secno>9.5. </span> Changes since the 14
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February 2012 “Last Call” Working Draft</h3>
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<p>The following (non-editorial) changes were made to this specification
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borders and added that the rendering will be defined later.
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</ul>
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<h3 id=changes-2011><span class=secno>9.5. </span> Changes Since the 15
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<h3 id=changes-2011><span class=secno>9.6. </span> Changes Since the 15
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February 2011 Candidate Recommendation</h3>
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<p>The following changes were made to this specification since the <a
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the property.
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</ul>
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<h3 id=changes-2009><span class=secno>9.6. </span> Changes Since the 17
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<h3 id=changes-2009><span class=secno>9.7. </span> Changes Since the 17
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December 2009 Candidate Recommendation</h3>
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<p>The following changes were made to this specification since the <a
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<dt id=ref-CSS3-BREAK>[CSS3-BREAK]
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<dd>Rossen Atanassov; Elika J. Etemad. <a
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href="http://www.w3.org/TR/2014/WD-css3-break-20140116/"><cite>CSS
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Fragmentation Module Level 3.</cite></a> 16 January 2014. W3C Working
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href="http://www.w3.org/TR/2015/WD-css3-break-20150129/"><cite>CSS
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Fragmentation Module Level 3.</cite></a> 29 January 2015. W3C Working
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Draft. (Work in progress.) URL: <a
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href="http://www.w3.org/TR/2014/WD-css3-break-20140116/">http://www.w3.org/TR/2014/WD-css3-break-20140116/</a>
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href="http://www.w3.org/TR/2015/WD-css3-break-20150129/">http://www.w3.org/TR/2015/WD-css3-break-20150129/</a>
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</dd>
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<!---->
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title="section 4.2."><strong>4.2.</strong></a>
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</ul>
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<li>‘<code class=css>none</code>’, <a href="#box-shadow-none"
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title="section 7.1."><strong>7.1.</strong></a>
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<li>''no-repeat''
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<ul>
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<li>'background-repeat' value, <a href="#no-repeat"

‎css-backgrounds/Overview.src.html‎

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<dt>Latest editor's draft:
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<dd><a href="http://dev.w3.org/csswg/css3-background/">http://dev.w3.org/csswg/css3-background/</a>
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<dt>Previous version:
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<dd><a href="http://www.w3.org/TR/2014/WD-css3-background-20140116/">http://www.w3.org/TR/2014/WD-css3-background-20140116/</a>
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<dd><a href="http://www.w3.org/TR/2014/CR-css3-background-20140909/">http://www.w3.org/TR/2014/CR-css3-background-20140909/</a>
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<dt>Issue Tracking:
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<dd><a href="http://www.w3.org/Style/CSS/Tracker/products/11">http://www.w3.org/Style/CSS/Tracker/products/11</a>
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<dt>Feedback:</dt>
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</table>
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<p>The 'box-shadow' property attaches one or more drop-shadows to the box.
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The property takes a comma-separated list of shadows, ordered front to back.
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Each shadow is given as a <var>&lt;shadow&gt;</var>,
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The property accepts either
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the <dfn id="box-shadow-none">''none''</dfn> value, which indicates no shadows,
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or a comma-separated list of shadows, ordered front to back.
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<p>Each shadow is given as a <var>&lt;shadow&gt;</var>,
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represented by 2-4 length values, an optional color, and an optional ''inset'' keyword.
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Omitted lengths are 0; omitted colors default to the value of the 'color' property.
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<pre class=prod>
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<h2 id="changes">
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Changes</h2>
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<h3 id="changes-2014-07">
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Changes since the 9 September 2014 Candidate Recommendation</h3>
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<p>The following (non-trivial) changes were made to this specification since the
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<a href="http://www.w3.org/TR/2014/CR-css3-background-20140909/">9 September 2014 Candidate Recommendation</a>:
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<ul>
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<li>Added missing definition of ''box-shadow: none''.
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(Apparently this was obvious enough that nobody noticed it was missing until now.)
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</ul>
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<h3 id="changes-2014-07">
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Changes since the 4 February 2014 Last Call Working Draft</h3>
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