gecko-dev/layout/reftests/margin-collapsing/block-negative-1a-dyn2.html

29 lines
521 B
HTML

<!DOCTYPE html>
<html class="reftest-wait">
<head>
<style type="text/css">
#a {
height: 20px;
background-color: green;
margin-bottom: 20px;
}
#b {
height: 20px;
background-color: blue;
margin-top: 0;
}
</style>
<script type="text/javascript">
function test() {
document.getElementById('b').style.marginTop = '-20px';
document.documentElement.removeAttribute('class');
}
document.addEventListener('MozReftestInvalidate', test, false);
</script>
</head>
<body>
<div id="a"></div>
<div id="b"></div>
</body>
</html>