css/css-values/vh-support-margin.html

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<title>
		CSS Values and Units Test:
		Viewports units are supported in margin properties
	</title>
	<meta name="assert" content="
		Viewports units are supported in margin properties
	" />

	<link
		rel="author"
		title="François REMY"
		href="mailto:francois.remy.pub@outlook.com"
	/ >

	<link rel="help" href="http://www.w3.org/TR/css3-values/#viewport-relative-lengths">

	<link
		rel="match"
		href="reference/all-green.html"
	/>

	<style type="text/css">

			html, body { margin: 0px; padding: 0px; height: 100%; }

			html { background: green; }
			#target { background: red; width: 100%; height: 100%; margin-left: -100vw; margin-top: -100vh; }

	</style>

</head>
<body>

	<div id="target"></div>

</body>
</html>