<!DOCTYPE html>
<title>CSS Box Alignment: align-content block fragmentation: complex block content</title>
<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
<link rel="help" href="https://www.w3.org/TR/css-align-3/#align-block">
<style title="Needed for automation; delete to review/debug">
@import "/fonts/ahem.css";
html { font: 10px/1 Ahem; max-width: 800px; }
</style>
<style>
.pager {
column-fill: auto;
column-width: 15em;
height: 5em;
}
.test {
height: 5em;
break-inside: avoid;
/* show bounds of test box without interfering with margin-collapsing */
border-left: solid black 1em;
}
.test:last-child {
height: 4.5em;
}
.large, .float {
height: 2.5em;
break-inside: avoid;
background: orange;
}
.float {
float: right;
}
.margin {
padding: 0.2em; /* using padding because of margin handling bugs
margin-block: 0.5em;
}
.margin > * {
margin-block: -0.3em;
switch back once fixed */
}
hr {
border: solid 1px;
margin: 0.5em;
}
/* readability */
.pager { border: solid 2px gray; margin: 0.5em 0; }
.test { color: #8888; text-align: center; }
.label { color: black; font-weight: bold; }
/* reference */
/* margins are truncated by unforced breaks, so mimic that */
.margin:first-child { margin-top: 0; padding-top: 0; }
.margin:last-child { margin-bottom: 0; padding-bottom: 0; }
</style>
<!--
This test creates breaks in overflow:
* between two blocks with collapsing negative margins
* through the middle of a float
* through some nested text
* after a nested float
-->
<div class="pager">
<div class="test">
<span class="label">CENTER</span>
<div class="margin">
<div class="large"></div>
</div>
</div>
<div class="test">
<div class="margin">
<div class="large"></div>
</div>
LINE 1<br>LINE 2
</div>
<div class="test">
<div class="float">FLT</div>
LINE 3
<hr>
LINE 4<br>LINE 5
</div>
<div class="test">
<div class="float">FLT</div>
LINE 6<br>LINE 7
</div>
</div>
<div class="pager">
<div class="test">
<span class="label">END</span>
<div class="margin">
<div class="large"></div>
</div>
</div>
<div class="test">
<div class="margin">
<div class="large"></div>
</div>
LINE 1<br>LINE 2
</div>
<div class="test">
<div class="float">FLT</div>
LINE 3
<hr>
LINE 4<br>LINE 5
</div>
<div class="test">
<div class="float">FLT</div>
LINE 6<br>LINE 7
</div>
</div>
<div class="pager">
<div class="test">
<span class="label">BASELINE</span>
<div class="margin">
<div class="large"></div>
</div>
</div>
<div class="test">
<div class="margin">
<div class="large"></div>
</div>
LINE 1<br>LINE 2
</div>
<div class="test">
<div class="float">FLT</div>
LINE 3
<hr>
LINE 4<br>LINE 5
</div>
<div class="test">
<div class="float">FLT</div>
LINE 6<br>LINE 7
</div>
</div>
<div class="pager">
<div class="test">
<span class="label">LAST BASELINE</span>
<div class="margin">
<div class="large"></div>
</div>
</div>
<div class="test">
<div class="margin">
<div class="large"></div>
</div>
LINE 1<br>LINE 2
</div>
<div class="test">
<div class="float">FLT</div>
LINE 3
<hr>
LINE 4<br>LINE 5
</div>
<div class="test">
<div class="float">FLT</div>
LINE 6<br>LINE 7
</div>
</div>
<div class="pager">
<div class="test">
<span class="label">UNSAFE CENTER</span>
<div class="margin">
<div class="large"></div>
</div>
</div>
<div class="test">
<div class="margin">
<div class="large"></div>
</div>
LINE 1<br>LINE 2
</div>
<div class="test">
<div class="float">FLT</div>
LINE 3
<hr>
LINE 4<br>LINE 5
</div>
<div class="test">
<div class="float">FLT</div>
LINE 6<br>LINE 7
</div>
</div>
<div class="pager">
<div class="test">
<span class="label">UNSAFE END</span>
<div class="margin">
<div class="large"></div>
</div>
</div>
<div class="test">
<div class="margin">
<div class="large"></div>
</div>
LINE 1<br>LINE 2
</div>
<div class="test">
<div class="float">FLT</div>
LINE 3
<hr>
LINE 4<br>LINE 5
</div>
<div class="test">
<div class="float">FLT</div>
LINE 6<br>LINE 7
</div>
</div>
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