gecko/layout/reftests/margin-collapsing/column-sibling-1b.html

<!DOCTYPE html>
<html>
<head>
<style type="text/css">
#block1, #block2 {
 height: 20px;
 background-color: orange;
}
#block1 {
 margin-bottom: 20px;
}
#multi-column {
 -moz-column-count: 1;
 column-count: 1;
 height: 20px;
 margin: 10px 0;
 background-color: blue;
}
#block2 {
 margin-top: 20px;
}
</style>
</head>
<body>
<div id="block1"></div>
<div id="multi-column"></div>
<div id="block2"></div>
</body>
</html>