<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
<html lang="en">
<head>
<title>Margin Collapsing: float positioning</title>
<style type="text/css">
table, td { padding: 0; border-spacing: 0; }
.comparator { border-spacing: 1em; }
.test, .control { border: solid; background: lime; }
.test .top { display: block; margin: 0; height: 1em; width: 8em; background: yellow; }
.test .container { display: block; margin: 1em 0 0 0; width: 8em; background: red; }
.test .float { float: left; margin: 0; height: 1em; width: 8em; background: yellow; }
.test .block { display: block; margin: 2em 0 0 0; height: 1em; background: red; }
.control .lime { border-top: 2em solid lime; width: 8em; }
.control .yellow { border-top: 1em solid yellow; }
</style>
</head>
<body>
<p>The following two squares should be identical.</p>
<table class="comparator">
<tr>
<td class="test">
<div class="top"> </div>
<div class="container">
<div class="float"> </div>
<div class="block"> </div>
</div>
</td>
<td class="control">
<div class="yellow"> </div>
<div class="lime"> </div>
<div class="yellow"> </div>
</td>
</tr>
</table>
</body>
</html>
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