<script>
if (window.testRunner) {
testRunner.waitUntilDone();
testRunner.setBackingScaleFactor(2, function() { testRunner.notifyDone(); });
}
</script>
<style>
.box {
background-color: green;
width: 80px;
height: 60px;
left: 10px;
top: 20px;
position: absolute;
}
body {
margin: 0px;
}
</style>
<div class="box">
</div>