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<!DOCTYPE HTML>
<!--
Any copyright is dedicated to the Public Domain.
-->
<html><head>
<meta charset="utf-8">
<title>Reference: Fragmentation height:auto grid with first grid row at top-of-page</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;
}
.block {
border:5px solid;
border-top-width:0;
border-bottom-width:10px;
}
.grid {
display: grid;
grid-template-columns: 30px 30px 30px;
grid-auto-rows: 50px;
grid-gap: 12px;
border:5px solid;
border-top-width:0;
border-bottom-width:10px;
}
span { background:lime; border:1px solid black; }
x { display:block; height:20px; }
.t { border-bottom-width:0; }
.b { border-top-width:0; }
br { page-break-before:always; break-before:always; }
</style>
</head>
<body>
<div class="columns" style="height: 120px/*fragmentainer ends in the end border*/">
<div style="background:grey">
<div class="grid t">
<span><x></x></span>
<span class="t"><x></x></span>
<span style="background:cyan" class="t"><x></x></span>
</div>
<br>
<div class="grid b">
<span><x></x></span>
<span class="b"><x></x></span>
<span class="b" style="grid-row:1; grid-column:3; height:11px; background:cyan"><x></x></span>
<span style="grid-row:1; grid-column:3; align-self:end; background:pink"><x></x></span>
</div></div></div>
<div class="columns" style="height: 8px/*fragmentainer ends in the end border*/">
<div style="background:grey">
<div class="block">
</div></div></div>
<div class="columns" style="height: 10px/*fragmentainer ends in the end border*/">
<div style="background:grey">
<div class="block" style="height:2px/*creates a Class C break opportunity at the end*/">
</div></div></div>
<div class="columns" style="height: 90px/*fragmentainer ends in the last row*/">
<div style="background:grey">
<div class="grid t">
<span class="t"><x></x></span>
<span class="t"><x></x></span>
<span style="background:cyan" class="t"><x></x></span>
</div>
<br>
<div class="grid b">
<span class="b"><x></x></span>
<span class="b" style="grid-row:1; grid-column:1; height:11px;"><x></x></span>
<span class="b" style="grid-row:1; grid-column:3; height:11px; background:cyan"><x></x></span>
<span style="grid-row:1; grid-column:1; align-self:end; background:pink"><x></x></span>
</div></div></div>
<div class="columns" style="height: 60px/*fragmentainer ends in the grid gap between the rows */">
<div style="background:grey">
<div class="grid t">
<span class="t"><x></x></span>
<span class="t"><x></x></span>
<span style="background:cyan" class="t"><x></x></span>
</div>
<div class="grid b">
<span class="b"><x></x></span>
<span class="b" style="grid-row:1; grid-column:1; height:11px;"><x></x></span>
<span class="b" style="grid-row:1; grid-column:3; height:11px; background:cyan"><x></x></span>
<span style="grid-row:1; grid-column:1; align-self:end; background:pink"><x></x></span>
</div></div></div>
<div class="columns" style="height: 30px/*fragmentainer ends in the first row*/; margin-bottom:30px">
<div style="background:grey">
<div class="grid t">
<span class="t"><x></x></span>
<span class="t"><x></x></span>
<span style="background:cyan" class="t"><x></x></span>
</div>
<div class="grid b">
<span class="b"><x></x></span>
<span class="b" style="grid-row:1; grid-column:1; height:11px;"><x></x></span>
<span class="b" style="grid-row:1; grid-column:3; height:11px; background:cyan"><x></x></span>
<span style="grid-row:1; grid-column:1; align-self:end; background:pink"><x></x></span>
</div></div></div>
<div class="columns" style="height: 0px/*zero height fragmentainer*/; margin-bottom:60px">
<div style="background:grey">
<div class="grid t">
<span class="t"><x></x></span>
<span class="t"><x></x></span>
<span style="background:cyan" class="t"><x></x></span>
</div>
<div class="grid b">
<span class="b"><x></x></span>
<span class="b" style="grid-row:1; grid-column:1; height:11px;"><x></x></span>
<span class="b" style="grid-row:1; grid-column:3; height:11px; background:cyan"><x></x></span>
<span style="grid-row:1; grid-column:1; align-self:end; background:pink"><x></x></span>
</div></div></div>
</body>
</html>