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Test Info:

<head>
<title>NEGATED omitted universal selector is forbidden</title>
<style type="text/css"><![CDATA[@namespace html url(http://www.w3.org/1999/xhtml);
@namespace a url(http://www.example.org/a);
@namespace b url(http://www.example.org/b);
div.stub > *|* { background-color : lime ; display : block ;
margin-bottom : 1em }
div.stub > *|*:not() { background-color : red }
/* yes, the rule just above selects nothing... That's the point */
]]></style>
<link rel="author" title="Daniel Glazman" href="http://glazman.org/"/>
<link rel="help" href="https://www.w3.org/TR/css3-selectors/#selectors"/> <!-- bogus link to make sure it gets found -->
<link rel="match" href="reference/this-address-p-p-p-lime-background.xht"/>
<meta name="flags" content=" namespace" />
</head>
<body>
<div class="stub">
<address>This address should have a green background</address>
<s xmlns="http://www.example.org/b">This paragraph should have a green background</s>
<t xmlns="">This paragraph should have a green background</t>
<u xmlns="http://www.example.org/a">This paragraph should have a green background</u>
</div>
</body>
</html>