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<!DOCTYPE html>
<title>CSS Reference</title>
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css">
<style>
.prior { width: 100px; height: 20px; background: green; }
.gap { width: 100px; height: 40px; background: white; }
.next { width: 100px; height: 20px; background: green; }
</style>
<p>Two green squares with a 40px gap; no red.</p>
<div class="prior"></div>
<div class="gap"></div>
<div class="next"></div>