1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
2 <html>
3
4 <head>
5
6 <title>CSS Test: Margin collapsing with clearance - Margins collapsing of an element's top margin with its first in-flow child should not be affected by clear and clearance</title>
7
8 <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins">
9 <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
10 <link rel="author" title="Bruno Fassino" href="fassino[at]gmail.com">
11 <meta content="When an element with clear set to it (to other than 'none') has a first in-flow child and their top margins are adjoining, then these margins should collapse normally." name="assert">
12 <meta content="" name="flags">
13
14 <style type="text/css">
15 #relatively-positioned-wrapper
16 {
17 position: relative;
18 }
19
20 #parent-lime
21 {
22 background-color: lime;
23 border-top: black solid 1px;
24 width: 50%;
25 }
26
27 #float-left-blue
28 {
29 background-color: blue;
30 float: left;
31 height: 100px;
32 width: 100px;
33 }
34
35 #clear-left
36 {
37 clear: left;
38 }
39
40 #clear-left div
41 {
42 background-color: aqua;
43 height: 60px;
44 margin-top: 140px;
45 }
46
47 #next-yellow
48 {
49 background-color: yellow;
50 height: 100px;
51 }
52
53 .ref-overlapped-red
54 {
55 background-color: red;
56 left: 0;
57 position: absolute;
58 z-index: -1;
59 }
60
61 #ref1
62 {
63 height: 200px;
64 top: 1px;
65 width: 50%;
66 }
67
68 #ref2
69 {
70 height: 100px;
71 top: 201px;
72 width: 100%;
73 }
74 </style>
75
76 </head>
77
78 <body>
79
80 <p>Test passes if there is no red visible on the page.</p>
81
82 <div id="relatively-positioned-wrapper">
83
84 <div id="parent-lime">
85 <div id="float-left-blue"></div>
86 <div id="clear-left">
87 <div></div>
88 </div>
89 </div>
90
91 <div id="next-yellow"></div>
92
93 <!--
94 #ref1 and #ref2 boxes create a sort of 'reference rendering' where #ref1 should be covered, overlapped by #parent-lime while #ref2 should be covered, overlapped by #next-yellow.
95 -->
96
97 <div id="ref1" class="ref-overlapped-red"></div>
98 <div id="ref2" class="ref-overlapped-red"></div>
99
100 </div>
101
102 </body>
103 </html>