servo/tests/wpt/web-platform-tests/css/css-regions-1/stacking-context/regions-stacking-context-005.html

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<!DOCTYPE html>
<html>
<head>
<title>CSS Test: regions changing stacking order when as part of a stacking context</title>
<link rel="author" title="Mihai Balan" href="mailto:mibalan@adobe.com">
<link rel="help" href="http://www.w3.org/TR/css3-regions/#the-flow-into-property">
<link rel="help" href="http://www.w3.org/TR/css3-regions/#flow-from">
<meta name="flags" content="ahem">
<meta name="assert" content="Test checks that regions stacking rules take precedence over content stacking rules.">
<link rel="match" href="reference/regions-stacking-context-005-ref.html">
<style>
#content {
font-family: Ahem;
font-size: 20px;
line-height: 1em;
opacity: .999;
flow-into: flow;
}
#front {
z-index: 10;
color: blue;
}
#back {
z-index: 1;
color: green;
}
.region {
width: 100px;
height: 100px;
flow-from: flow;
}
.region p{
background-color: red;
width: 50%;
}
#front-region {
margin-top: -50px;
margin-left: 50px;
}
</style>
</head>
<body>
<ol>
<li>You should see no red.</li>
<li>You should see two colored overlapping squares: a green square on top of a blue square.</li>
</ol>
<div id="content">
<span id="front">xxxxx<br>xxxxx<br>xxxxx<br>xxxxx<br>xxxxx<br></span>
<span id="back">xxxxx<br>xxxxx<br>xxxxx<br>xxxxx<br>xxxxx</span>
</div>
<div class="region">
<p>&nbsp;</p>
</div>
<div id="front-region" class="region">
<p>&nbsp;</p>
</div>
</body>
</html>