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<!DOCTYPE HTML>
<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/
-->
<html><head>
<meta charset="utf-8">
<title>Reference: Fragmentation of height:auto grid, not top-of-page, forced breaks</title>
<link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1144096">
<style type="text/css">
html,body {
color:black; background-color:white; font-size:16px; padding:0; margin:0;
}
body { overflow:hidden; }
.columns {
position:relative;
-ms-columns: 5;
-webkit-columns: 5;
columns: 5;
-ms-column-fill: auto;
-webkit-column-fill: auto;
column-fill: auto;
border: 2px solid salmon;
margin-bottom: 5px;
}
.grid {
display: grid;
grid-template-columns: 30px 30px 30px;
grid-auto-rows: 30px;
grid-gap: 12px;
border:5px solid;
}
span { background:lime; border:1px solid black; }
x { display:block; height:20px; }
.t { border-bottom-width:0; }
.b { border-top-width:0; }
.m { border-top-width:0; border-bottom-width:0; }
.br1 { height:1px; }
</style>
</head>
<body>
<div class="columns" style="height: 100px/*two rows would fit in 1st column*/">
<div style="padding-top:10px; background:grey">
<div class="grid t">
<span><x></x></span>
<span class="t"><x></x></span>
<span class="t" style="background:cyan"><x></x></span>
</div>
<div style="height:40px;"></div>
<div class="grid b">
<span class="b"><x></x></span>
<span class="b" style="grid-area:1/3; height:6px; background:cyan"><x></x></span>
<span style="grid-area:1/3; align-self:end; background:pink"><x></x></span>
<span style="grid-row:1"><x></x></span>
<span><x></x></span>
</div></div></div>
<div class="columns" style="height:30px">
<div style="padding-top:10px; background:grey">
<div class="grid break-before">
</div></div></div>
<div class="columns" style="height: 60px/*everything would fit in 1st column*/">
<div style="padding-top:10px; background:grey">
<div style="height:40px;"></div>
<div class="grid">
<span><x></x></span>
</div></div></div>
<div class="columns" style="height: 100px/*everything would fit in 1st column*/">
<div style="padding-top:10px; background:grey">
<div class="grid t">
<span class="t"><x></x></span>
<span class="t"><x></x></span>
<span class="t" style="background:cyan"><x></x></span>
</div>
<div style="height:40px;"></div>
<div class="grid b">
<span class="b" style="grid-area:1/1; height:6px"><x></x></span>
<span style="align-self:end; grid-area:1/1; background:pink"><x></x></span>
<span class="b"><x></x></span>
<span class="b" style="height:6px; background:cyan"><x></x></span>
</div></div></div>
<div class="columns" style="height: 100px/*everything would fit in 1st column*/">
<div style="padding-top:10px; background:grey">
<div class="grid t">
<span class="t"><x></x></span>
<span class="t"><x></x></span>
<span class="t" style="background:cyan"><x></x></span>
</div>
<div style="height:40px;"></div>
<div class="grid b">
<span class="b" style="grid-area:1/1; height:6px"><x></x></span>
<span style="align-self:end; grid-area:1/1; background:pink"><x></x></span>
<span class="b"><x></x></span>
<span class="b" style="height:6px; background:cyan"><x></x></span>
</div></div></div>
<div class="columns" style="height: 100px/*everything would fit in 1st column*/">
<div style="padding-top:10px; background:grey">
<div style="height:90px;"></div>
<div class="grid">
<span style="height:35px"><x></x></span>
<span style="grid-row:span 2"><x></x></span>
<span style="height:35px; background:cyan"><x></x></span>
<span style="grid-area:2/1; align-self:end; background:pink"><x></x></span>
</div>
</div></div>
<div class="columns" style="height: 80px/*one row fits in 1st column, two in 2nd column, but forced break there*/">
<div style="padding-top:30px; background:grey">
<div class="grid t">
<span class="t"><x></x></span>
<span class="t" style="background:cyan"><x></x></span>
</div>
<div class="grid m">
<span class="b" style="grid-area:1/1; height:6px"><x></x></span>
<span class="b" style="background:cyan"><x></x></span>
<span style="grid-area:1/1; align-self:end; background:pink"><x></x></span>
</div>
<div style="height:50px"></div>
<div class="grid b">
<span style=""><x></x></span>
</div>
</div></div>
<div class="columns" style="height: 160px/*everything would fit in 1st column*/">
<div style="padding-top:30px; background:grey">
<div class="grid t">
<span class="t" style="grid-row: span 2"><x></x></span>
<span style="grid-row: span 2"><x></x></span>
</div>
<div style="height:53px"></div>
<div class="grid b">
<span class="b"><x></x></span>
</div>
</div></div>
</body>
</html>
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