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 Multi-column Layout Test: multi-column and margin collapsing of first child (basic)</title>
5 <link rel="author" title="Opera Software ASA" href="http://www.opera.com/">
6 <link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> <!-- 2013-08-10 -->
7 <link rel="help" href="http://www.w3.org/TR/css3-multicol/#pseudo-algorithm" title="3.4 Pseudo-algorithm">
8 <link rel="match" href="reference/ref-filled-green-100px-square.htm">
9 <meta name="flags" content="ahem">
10 <meta name="assert" content="This test checks that the margin-top of the first child of a multi-column element (with column-fill: auto) does not collapse with its parent.">
11 <style type="text/css">
12 div#test-multi-column-red
13 {
14 background-color: red;
15 color: white;
16 font: 3.125em/1 Ahem; /* equivalent to 50px/50px Ahem */
17 height: 4em;
18 margin-top: 0em;
19 width: 4em;
20
21 column-count: 2;
22 column-fill: auto;
23 column-gap: 0em;
24 }
25
26 div#first-child {margin-top: 2em;}
27
28 div#reference-overlapping-green
29 {
30 background-color: green;
31 bottom: 200px;
32 height: 100px;
33 position: relative;
34 width: 100px;
35 }
36 </style>
37
38 </head>
39
40 <body>
41
42 <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
43
44 <div id="test-multi-column-red">
45 <div id="first-child">ab cd</div>
46 ef gh ij kl
47 </div>
48
49 <div id="reference-overlapping-green"></div>
50
51 <!--
52
53 Expected result (before the overlapping):
54
55 *********************
56 | margin- | ef |
57 | top red | |
58 | back | gh |
59 | ground | |
60 *********************
61 | ab | ij |
62 | | |
63 | cd | kl |
64 | | |
65 *********************
66
67 -->
68
69 </body>
70 </html>