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<!DOCTYPE HTML>
<title>Test of block formatting context displacement by floats</title>
<style>
.contain {
border: medium solid;
width: 400px;
height: 400px;
background: yellow;
}
.float {
float: left;
clear: left;
height: 20px;
background: blue;
}
.bfc {
float: left;
clear: left;
width: 250px;
height: 21px; /* one pixel too tall to fit next to first float */
background: fuchsia;
}
</style>
<div class="contain">
<div class="float" style="width: 100px; margin-top: 3px"></div>
<div class="float" style="width: 200px"></div>
<div class="bfc"></div>
</div>