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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Reference</title>
<style>
div.test { margin: 1em; line-height: 0.5em; font-family: monospace; }
div.test span { background: rgb(153, 153, 255);}
div.ref { height: 1em; width: 5em; background: rgb(153, 153, 255); }
</style>
<body>
<p>The following two boxes should be the same color:</p>
<div class="test"><span> <br> </span></div>
<div class="ref"></div>
</body>