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<head>
<title>CSS Test reference</title>
<link rel="author" title="Florian Rivoal" href="https:/florian.rivoal.net"/>
<style type="text/css">
div {
height: 2em;
background: green;
}
</style>
</head>
<body>
<p>There must be a green box below and no red.</p>
<div></div>
</body>
</html>