Untitled

<!DOCTYPE html>
<html lang="en">
<head style="min-height: 100%">
	<meta charset="UTF-8">
	<title>100% height</title>
</head>
<body style="min-height: 100%">
	<div id="height-wont-work">
	  <div id="map" style="height: 100%; background-color: #ff0"></div>
	</div>
	<div id="will-work" style="height: 100%">
	  <div id="map" style="height: 100%; background-color: #00f"></div>
	</div>
</body>
</html>