<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Basic User Interface Reference File</title>
<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
<style>
div {
	display: inline-block;
	width: 100px;
	height: 100px;
	background: green;
	margin: 10px;
}

body {
	max-width: 700px;
}
</style>
<body>
  <p>Test passes if there are 20 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
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</body>