layout/reftests/margin-collapsing/block-negative-2a.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4 <style type="text/css">
   5 #a {
   6  height: 20px;
   7  background-color: green;
   8 }
   9 #b {
  10  height: 20px;
  11  background-color: blue;
  12  margin-top: -20px;
  13 }
  14 </style>
  15 </head>
  16 <body>
  17 <div id="a"></div>
  18 <div id="b"></div>
  19 </body>
  20 </html>