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Test Info:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<head>
<title>CSS Test: Percent height inside anonymous block</title>
<link rel="author" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
<link rel="match" href="anonymous-boxes-001b-ref.xht" />
<meta content="ahem" name="flags" />
<meta content="Anonymous block boxes are ignored when resolving percentage values that would refer to it: the closest non-anonymous ancestor box is used instead." name="assert" />
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style type="text/css"><![CDATA[
body
{
font: 1em/1.25 serif;
margin: 8px;
}
p {margin: 1em 0;}
strong {line-height: 1;}
div#overlapped-red
{
background-color: red;
height: 100px;
left: 8px;
position: absolute;
top: 122px;
/*
16px : max(body's margin-top, p's margin-top)
+
20px : p's 1st line box height
+
20px : p's 2nd line box height
+
16px : p's margin-bottom
+
50px : div#closest-non-anonymous-ancestor line box height
-----------------------------------------------------------
122px
*/
right: 8px;
z-index: -1;
}
div#closest-non-anonymous-ancestor
{
color: white;
font: 2.5em/1.25 Ahem; /* equivalent to 40px/50px in absolute units */
height: 200px;
}
div#child-of-anonymous-block-box
{
background-color: green;
height: 50%;
}
]]></style>
</head>
<body>
<p>Test passes if there is a filled green<br />
rectangle across the page and <strong>no red</strong>.</p>
<div id="overlapped-red"></div>
<div id="closest-non-anonymous-ancestor">Some <div id="child-of-anonymous-block-box"></div> text
<p>More text</p>
</div>
<!--
For example, if the child of the anonymous block box inside the DIV
above needs to know the height of its containing block to resolve a
percentage height, then it will use the height of the containing
block formed by the DIV, not of the anonymous block box.
-->
</body>
</html>