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Test Info:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>CSS Test: CSS: z-index 1, -1 and backgrounds (child)</title>
<link rel="author" title="Ian Hickson" href="mailto:ian@hixie.ch"/>
<link rel="reviewer" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2012-07-03 -->
<link rel="alternate" href="http://www.hixie.ch/tests/adhoc/css/box/absolute/z-index/007.html" type="text/html"/>
<link rel="match" href="z-index-abspos-001-ref.xht" />
<style type="text/css">
.background { position: absolute; height: 100px; width: 300px; background: red; z-index: 1; }
.negative { position: absolute; height: 150px; width: 400px; background: green; z-index: -1; }
</style>
</head>
<body>
<p>Test passes if there is a filled green rectangle and <strong>no red</strong>.</p>
<div class="background"> <div class="negative"> </div> </div>
</body>
</html>