<!DOCTYPE html> <!-- webkit-test-runner [ useFlexibleViewport=true ] -->
<html>
<head>
    <meta name="viewport" content="width=device-width">
    <style>
        body {
            margin: 0;
        }
        .test {
            position: relative;
            background-color: green;
            height: 800px;
            width: 100%;
        }
    </style>
</head>
<body>
    <div class="test"></div>
</body>
</html>