layout/reftests/margin-collapsing/block-html-body-1-ref2.html


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<!DOCTYPE html>
<html>
<head>
<style type="text/css">
html, body {
 margin: 0; padding: 0;
 background-color: green;
}
div {
 margin: 30px 20px;
 background-color: red;
 height: 20px;
}
div div {
 margin: 30px;
 background-color: blue;
}
</style>
</head>
<body>
<div><div></div></div>
</body>
</html>