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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 with ::before/::after items</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: 3;
-webkit-columns: 3;
columns: 3;
-ms-column-fill: auto;
-webkit-column-fill: auto;
column-fill: auto;
border: 2px solid salmon;
margin-bottom: 1px;
height: 150px;
}
.no-border { border-style:none; }
.grid {
display: grid;
grid-template-columns: 30px;
grid-auto-rows: 20px;
grid-gap: 2px;
border:5px solid;
counter-reset: item;
}
.start {
align-content: start;
}
span { counter-increment:item; }
.br1.before { grid-row:1; }
.ar1.after { grid-row:1; }
.br2.before { grid-row:2; }
.ar2.after { grid-row:2; }
.br7.before { grid-row:7; }
.ar7.after { grid-row:7; }
.span5 { grid-row-end: span 5; background:lime; }
.span15 { grid-row: 1 / span 15; grid-column:1; background:lime; }
.span15.before { grid-row-end: span 15; grid-column:3; background:grey; }
.span15.after { grid-row: 2 / span 15; grid-column:2; background:lime; }
.break-before { page-break-before:always; break-before:always; }
.break-after { page-break-after:always; break-after:always; }
.avoid-break { page-break-inside:avoid; break-inside:avoid; }
</style>
</head>
<body>
<div class="columns">
<div class="grid">
<span><c>5:before</c></span>
<span><c>2:after</c></span>
<span><c>1:before</c></span>
<span class="ar2"><c>1</c></span>
<span class="ar2"><c>1:after</c></span>
<span class="ar2"><c>2:before</c></span>
<span><c>2</c></span>
<span><c>3:before</c></span>
<span><c>3</c></span>
<span><c>3:after</c></span>
<span><c>4:before</c></span>
<span><c>4</c></span>
<span class="br1"><c>4:after</c></span>
<span class="br1"><c>5</c></span>
<span class="br1"><c>5:after</c></span>
</div></div>
<div class="columns">
<div class="grid">
<span><c>5:after</c></span>
<span><c>4:after</c></span>
<span><c>1:before</c></span>
<span><c>1</c></span>
<span><c>1:after</c></span>
<span><c>2:before</c></span>
<span><c>2</c></span>
<span><c>2:after</c></span>
<span><c>3:before</c></span>
<span class="ar2"><c>3</c></span>
<span class="ar2"><c>3:after</c></span>
<span class="ar2"><c>4:before</c></span>
<span class="ar1"><c>4</c></span>
<span class="ar1"><c>5:before</c></span>
<span class="ar1"><c>5</c></span>
</div></div>
<div class="columns">
<div class="grid">
<span><c>5:after</c></span>
<span><c>5:before</c></span>
<span><c>1:before</c></span>
<span><c>1</c></span>
<span><c>1:after</c></span>
<span><c>2:before</c></span>
<span><c>2</c></span>
<span><c>2:after</c></span>
<span><c>3:before</c></span>
<span><c>3</c></span>
<span><c>3:after</c></span>
<span><c>4:before</c></span>
<span class="ar1 br2"><c>4</c></span>
<span class="ar1 br2"><c>4:after</c></span>
<span class="ar1 br2"><c>5</c></span>
</div></div>
<div class="columns">
<div class="grid">
<span><c>5:before</c></span>
<span><c>5:after</c></span>
<span><c>1:before</c></span>
<span><c>1</c></span>
<span><c>1:after</c></span>
<span><c>2:before</c></span>
<span><c>2</c></span>
<span><c>2:after</c></span>
<span><c>3:before</c></span>
<span><c>3</c></span>
<span><c>3:after</c></span>
<span><c>4:before</c></span>
<span class="ar2 br1"><c>4</c></span>
<span class="ar2 br1"><c>4:after</c></span>
<span class="ar2 br1"><c>5</c></span>
</div></div>
<div class="columns">
<div class="grid">
<span><c>5:before</c></span>
<span><c>4:before</c></span>
<span><c>1:before</c></span>
<span><c>1</c></span>
<span><c>1:after</c></span>
<span><c>2:before</c></span>
<span><c>2</c></span>
<span><c>2:after</c></span>
<span><c>3:before</c></span>
<span class="br2"><c>3</c></span>
<span class="br2"><c>3:after</c></span>
<span class="br2"><c>4</c></span>
<span class="br1"><c>4:after</c></span>
<span class="br1"><c>5</c></span>
<span class="br1"><c>5:after</c></span>
</div></div>
<div class="columns">
<div class="grid">
<span><c>1:before</c></span>
<span><c>5:before</c></span>
<span><c>1</c></span>
<span><c>1:after</c></span>
<span><c>2:before</c></span>
<span><c>2</c></span>
<span><c>4:before</c></span>
<span><c>2:after</c></span>
<span class="span5"><c>3:before</c></span>
<span class="span5"><c>3</c></span>
<span class="span5"><c></c></span>
<span class="br7"><c></c></span>
<span class="br2"><c></c></span>
<span class="br2"><c></c></span>
<span class="br2"><c></c></span>
</div></div>
<div class="columns">
<div class="grid" style="grid-template-columns: 30px 30px 30px">
<span class="span15 before"><c>1:before</c></span>
<span class="span15"><c>1</c></span>
<span class="span15 after"><c>1:after</c></span>
</div></div>
</body>
</html>
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