1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
2 <html>
3 <head>
4 <title>CSS Test: Margin collapsing is based on used values of 'padding', 'margin' and 'border'</title>
5 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
6 <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins">
7 <meta name="flags" content="ahem image">
8 <meta name="assert" content="Collapsing of margins is based on the used values of 'padding', 'margin' and 'border'.">
9 <style type="text/css">
10 div
11 {
12 font: 20px/1em Ahem;
13 width: 5em;
14 }
15 #div3, #div5
16 {
17 background: green;
18 height: 1em;
19 }
20 #div1
21 {
22 background: url('support/margin-collapse-2em-space.png');
23 }
24 #div2
25 {
26 border: 0 solid red;
27 width: 0;
28 }
29 #div3
30 {
31 margin-bottom: 2em;
32 }
33 #div4
34 {
35 border: inherit;
36 margin: 50%;
37 padding: 50%;
38 }
39 #div5
40 {
41 margin-top: 2em;
42 }
43 </style>
44 </head>
45 <body>
46 <p>Test passes if there is no red visible on the page.</p>
47 <div id="div1">
48 <div id="div2">
49 <div id="div3"></div>
50 <div id="div4">
51 <div id="div5"></div>
52 </div>
53 </div>
54 </div>
55 </body>
56 </html>