import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

This commit is contained in:
Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
150858 changed files with 23884658 additions and 0 deletions

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<!DOCTYPE html>
<html>
<head>
<style type="text/css">
#abs {
position: absolute;
left: 20px; top: 20px;
width: 100px;
background-color: red;
}
#parent {
margin-bottom: 100px;
}
#zero-height {
margin-bottom: 100px;
height: 0;
}
#child-of-zero-height {
height: 100px; background: green;
}
</style>
</head>
<body>
<div id="abs">
<div id="parent">
<div id="zero-height">
<div id="child-of-zero-height"></div>
</div>
</div>
</div>
</body>
</html>