layout/reftests/margin-collapsing/block-em-length-1-ref.html


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<!DOCTYPE html>
<html>
<head>
<style type="text/css">
body {
 font-size: 20px;
}
#block1 {
 height: 20px;
 background-color: blue;
}
#spacer {
 font-size: 50px;
 height: 5em;
}
#block2 {
 height: 20px;
 background-color: blue;
}
</style>
</head>
<body>
<div id="block1"></div>
<div id="spacer"></div>
<div id="block2"></div>
</body>
</html>