servo/tests/wpt/css-tests/css-regions-1_dev/xhtml1/region-stacking-context-001.xht

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>CSS Test: Regions create new stacking context</title>
<link rel="author" title="Alan Stearns" href="mailto:stearns@adobe.com" />
<link rel="help" href="http://www.w3.org/TR/css3-regions/#properties" />
<link rel="help" href="http://www.w3.org/TR/css3-regions/#flow-from" />
<link rel="match" href="reference/region-stacking-context-001-ref.xht" />
<meta name="flags" content="" />
<meta name="assert" content="The z-index set on region content does not affect how they are stacked with siblings of the region." />
<style type="text/css">
.square{
height: 50px;
width: 50px;
position: relative;
}
.stackingFlow{
flow-into: stacking;
}
.stackingRegion{
flow-from: stacking;
width: 50px;
height: 100px;
position: relative;
margin-top: -50px;
}
.error{
background: red;
}
.flowGreen{
background: green;
z-index: -10;
}
.flowError{
background: red;
z-index: 10;
}
.green{
background: green;
margin-top: -50px;
}
</style>
</head>
<body>
<div class="stackingFlow">
<div class="flowGreen square"></div>
<div class="flowError square"></div>
</div>
<p>Test passes if there is no red.</p>
<div>
<div class="error square"></div>
<div class="stackingRegion"></div>
<div class="green square"></div>
</div>
</body>
</html>