1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
2 <html lang="en">
3 <head>
4 <title>CSS Test: Margin Collapsing: top margins</title>
5 <link rel="author" title="Ian Hickson" href="mailto:ian@hixie.ch">
6 <link rel="alternate" href="http://www.hixie.ch/tests/adhoc/css/box/block/margin-collapse/039.html" type="text/html">
7 <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins">
8 <style type="text/css">
9 .a { margin: 0; background: red; }
10 .b { margin: 2em 0 0 0; background: red; }
11 .c { margin: 1em 0 0 0; background: red; }
12 .d { margin: 0; background: green; color: white; }
13 </style>
14 </head>
15 <body>
16 <p>There should be no red below.</p>
17 <div class="a">
18 <div class="b">
19 <div class="c">
20 <div class="d">
21 This line should be green.
22 </div>
23 </div>
24 </div>
25 </div>
26
27
28 </body>
29 </html>