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 - in-flow block-level margins with an element 'height' of 'auto' and 'max-height' and 'min-height'</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="The bottom margin of an in-flow block-level element(#div2) with a 'height' of 'auto' will adjoin to its last in-flow block-level child's (#div3) bottom margin if such auto-height in-flow block-level element has no bottom padding and no bottom border. The bottom margins will then collapse.">
9 <style type="text/css">
10 div
11 {
12 font: 20px/1em Ahem;
13 width: 5em;
14 }
15 #div1
16 {
17 background: url('support/margin-collapse-2em-space.png') 0 0;
18 height: 4em;
19 }
20 #div2
21 {
22 background: red;
23 height: auto;
24 min-height: 0.5em;
25 max-height: 2em;
26 }
27 #div3, #div4
28 {
29 background: green;
30 height: 1em;
31 }
32 #div2, #div3
33 {
34 margin-bottom: 2em;
35 }
36 </style>
37 </head>
38 <body>
39 <p>Test passes if there is no red visible on the page.</p>
40 <div id="div1">
41 <div id="div2">
42 <div id="div3"></div>
43 </div>
44 <div id="div4"></div>
45 </div>
46 </body>
47 </html>