layout/reftests/margin-collapsing/block-no-content-1a.html


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