layout/reftests/margin-collapsing/block-first-child-1a.html


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<!DOCTYPE html>
<html>
<head>
<style type="text/css">
#separator, #first-child {
 height: 20px;
 background-color: green;
}
#parent {
 margin-top: 10px;
}
#first-child {
 margin-top: 20px;
}
</style>
</head>
<body>
<div id="separator"></div>
<div id="parent">
 <div id="first-child"></div>
</div>
</body>
</html>