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	<head>
		<title>CSS Test (Conditional Rules): In @supports conditions, the arguments of a function can begin with spaces</title>
		<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
		<link rel="author" href="http://opera.com" title="Opera Software ASA">
		<link rel="help" href="http://www.w3.org/TR/css3-conditional/#at-supports">
		<link rel="match" href="at-supports-001-ref.html">
		<meta name="flags" content="">
		<style>
			div {
				background:red;
				height:100px;
				width:100px;
			}
			@supports (not (width:compute( 2px + 2px ))) {
				div { background-color:green; }
			}
		</style>
	</head>
	<body>
		<p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>
		<div></div>
	</body>
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