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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/CSS2/normal-flow/margin-collapse-after-float-001.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Test: adjoining margins collapse when a float or an out-of-flow box comes first</title>
<link rel="author" title="Alan Baradlay" href="mailto:ABaradlay@apple.com">
<link rel="match" href="margin-collapse-after-float-001-ref.html">
<meta name="assert" content="A self collapsing block's margin collapses with the following sibling's margin. A float or an out-of-flow box before them takes no part in that.">
<style>
.container {
display: flow-root;
position: relative;
width: 100px;
height: 30px;
margin-bottom: 10px;
background: red;
}
.float {
float: left;
width: 100px;
height: 10px;
background: green;
}
.out-of-flow {
position: absolute;
top: 0;
left: 0;
width: 100px;
height: 10px;
background: green;
}
.self-collapsing {
margin-top: 10px;
}
.bar {
margin-top: 10px;
height: 20px;
background: green;
}
</style>
<p>Test passes if there are two filled green rectangles and no red.</p>
<div class="container">
<div class="float"></div>
<div class="self-collapsing"></div>
<div class="bar"></div>
</div>
<div class="container">
<div class="out-of-flow"></div>
<div class="self-collapsing"></div>
<div class="bar"></div>
</div>