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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>CSS Reftest Reference</title>
<link rel="author" title="Kyle Zentner" href="mailto:zentner.kyle@gmail.com">
<style>
#left {
float: left;
height: 50px;
width: 10px;
background: blue;
}
#a {
background: green;
margin: 10px;
width: 50px;
height: 50px;
}
</style>
</head>
<body>
<div id="left"></div>
<div id="a"></div>
</body>
</html>