<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
<html lang="en">
<head>
<title>Margin Collapsing: fixed positioned (block-inside-inline version)</title>
<style type="text/css">
div.test { background: green; position: fixed; top: 4em; }
div.test div { background: red; margin: 5em 2.5em; }
div.control { height: 5em; width: 5em; background: red; position: fixed; top: 4em; }
</style>
</head>
<body>
<p>This page should have one square green block and no red.</p>
<div class="control"></div>
<div class="test"><span>
<div></div>
</span>
</div>
</body>
</html>