97 lines
2.8 KiB
HTML
97 lines
2.8 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>CSS Test: inherit applied on margin set with em</title>
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<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
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<link rel="help" title="4.3.2 Length" href="http://www.w3.org/TR/CSS21/syndata.html#length-units" />
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<link rel="help" title="6.2.1 The 'inherit' value" href="http://www.w3.org/TR/CSS21/cascade.html#value-def-inherit" />
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<link rel="help" href="http://www.w3.org/TR/css-cascade-3/#inherit" />
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<link rel="help" href="http://www.w3.org/TR/css-cascade-4/#inherit" />
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<link rel="help" title="8.3 Margin properties" href="http://www.w3.org/TR/CSS21/box.html#margin-properties" />
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<link rel="match" href="margin-em-inherit-001-ref.xht" />
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<meta content="The 'em' unit is equal to the computed value of the 'font-size' property of the element on which it is used. When inherit keyword is used, the property takes the same computed value - a length value in this testcase - as the property for the element's parent." name="assert" />
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<meta content="image" name="flags" />
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<style type="text/css"><![CDATA[
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body {margin: 8px;}
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p
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{
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font: 1em/1.25 serif;
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margin: 1em 0em;
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}
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div#grand-parent {width: 600px;}
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div#parent
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{
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background-color: green;
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border: white solid 6px;
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/*
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Such border prevents margin collapsing between
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#parent's vertical margins and #child's vertical margins
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*/
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font-size: 28px;
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margin: 2em 3em 1em 4em; /* 56px 84px 28px 112px */
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}
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div#child
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{
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font-size: 40px;
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margin: inherit;
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/*
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What is inherited is a computed length value: so
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it is 56px 84px 28px 112px and not 80px 120px 40px 160px
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*/
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}
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div#abs-pos-overlapping-green
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{
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left: 238px;
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position: absolute;
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top: 174px;
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}
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/*
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8px (body's margin-left)
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+ 112px (#parent's margin-left)
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+ 6px (#parent's border-left)
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+ 112px (#child's margin-left)
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==================
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238px
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*/
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/*
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16px (max(8px, 16px): body's margin-top collapses with p's margin-top)
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+ 20px (first line)
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+ 20px (second line)
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+ 56px (max(16px, 56px): p's margin-bottom collapses with #parent's margin-top)
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+ 6px (#parent's border-top)
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+ 56px (#child's margin-top)
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==================
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174px
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*/
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]]></style>
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</head>
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<body>
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<p>Test passes if there is a filled green<br />
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rectangle and if there is no red.</p>
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<div id="grand-parent">
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<div id="parent">
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<div id="child"><img src="support/100x100-red.png" alt="Image download support must be enabled" /></div>
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</div>
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</div>
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<div id="abs-pos-overlapping-green"><img src="support/swatch-green.png" width="100" height="100" alt="Image download support must be enabled" /></div>
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</body>
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</html>
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