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Test Info:
<!DOCTYPE HTML>
<html>
<head>
<title>CSS 2.1 Test Suite: generated content</title>
<link rel="author" title="Robert O'Callahan" href="mailto:robert@ocallahan.org" />
<meta name="flags" content="" />
<style>
div::before {
content:url(missing-image.png);
}
div { border:1px solid green; margin:5px; }
</style>
</head>
<div>Inner</div>
</body>
</html>