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Handle the special case of a flex frame being the absolute containing block correctly from the CSS align code

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JustOff 2019-03-14 19:40:42 +02:00 • committed by Roy Tam
commit dff04053af
6 changed files with 148 additions and 6 deletions
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layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-002.html Normal file
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<!DOCTYPE html>
<html><head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"><title>CSS Test: Absolutely positioned children of flex container with CSS align</title>
<meta charset="utf-8">
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#abspos-items">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1386654">
<link rel="match" href="https://hg.mozilla.org/mozilla-central/raw-file/6538de3b6137/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-002-ref.html">
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<style>
.parent {
position: fixed;
top: 0;
left: 0;
display: flex;
align-items: center;
justify-content: center;
width: 180px;
height: 180px;
/* Expand the background area to 200px, without touching the content-box,
which is what flex absolute children should be aligned relative to. */
border-top: 5px solid yellow;
padding-top: 15px;
border-left: 5px solid yellow;
padding-left: 15px;
background: yellow;
}
.child {
position: absolute;
width: 100px;
height: 100px;
background: green;
}
</style>
</head><body><div class="parent"><div class="child"></div></div>
</body></html>