<html>
<head>
<title>Bug 387876 Reference Case 1</title>
</head>
<body>
  The yellow box should say 'ab'.
  <div style="-moz-column-width: 30px;
              -moz-column-gap: 0px;
              height: 0px;
             ">
    <div id="weirdDiv" 
         style="background: yellow;">ab</div>
    z
  </div>
</body>
</html>