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firefox/testing/web-platform/tests/css/css-conditional/css-supports-016.xht
Daniel Baumann 5e9a113729
Adding upstream version 140.0.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-25 09:37:52 +02:00

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HTML

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>CSS Test: An @supports rule with valid syntax and a passing condition must apply rules inside it</title>
<link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au" />
<link rel="help" href="http://www.w3.org/TR/css3-conditional/#at-supports" />
<meta name="assert" content="A negation of an @supports condition must pass if and only if the sub-condition fails. The sub-condition here is a supported property name with an unsupported value."/>
<link rel="match" href="support/pass.xht" />
<style type="text/css"><![CDATA[
@supports not (color: rainbow) {
html { background-color: green }
}
]]></style>
</head>
<body>
</body>
</html>