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<!doctype html>
<head>
<title>CSS Test (Conditional Rules): Validity of namespaces in @supports</title>
<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
<link rel="help" href="https://www.w3.org/TR/css-conditional-3/#contents-of">
<link rel="help" href="https://www.w3.org/TR/css-conditional-3/#use">
<link rel="help" href="https://www.w3.org/TR/css-namespaces/">
<link rel="help" href="https://www.w3.org/TR/CSS2/generate.html#content">
<link rel="help" href="https://www.w3.org/TR/css-conditional-3/#at-supports">
<link rel="match" href="at-supports-001-ref.html">
<meta name="assert"
content="Test passes if namespaces used within @supports are valid only if declared in a valid @namespace rule.">
<style>
@namespace x "http://www.w3.org/1999/xlink";
@supports (background: green) {}
@namespace y "http://www.w3.org/1999/xlink";
div {
height: 20px;
width: 100px;
}
.test1 { background: red; }
@supports (content: attr(x|href)) {
.test1 { background: green; }
}
.test2 { background: green; }
@supports (content: attr(y|href)) {
.test2 { background: red; }
}
.test3 { background: red; }
@supports not (content: attr(y|href)) {
.test3 { background: green; }
}
.test4 { background: red; }
.test5 { background: green; }
@supports (background: red) {
x|y, .test4 { background: green; }
y|x, .test5 { background: red; }
}
</style>
</head>
<body>
<p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>
<div class="test1"></div>
<div class="test2"></div>
<div class="test3"></div>
<div class="test4"></div>
<div class="test5"></div>
</body>
</html>
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