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<!DOCTYPE html>
<!-- Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ -->
<html>
<meta charset="utf-8">
<title>CSS Flexbox Test: Fragmentation of block-size:auto single-line column-reverse flex container with fixed block-size flex items</title>
<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
<link rel="author" title="Mozilla" href="http://www.mozilla.org/">
<link rel="help" href="https://drafts.csswg.org/css-flexbox-1/#pagination">
<link rel="match" href="flexbox-single-column-1-ref.html">
<meta name="assert" content="This test verifies fragmentation of fixed block-size flex items in a block-size:auto single-line column-reverse flex container, with various combinations of margin/border/padding, alignments, and row-gap. Also use a script to enlarge multicol block-size.">
<style>
.multicol {
block-size: 30px;
inline-size: 190px;
column-width: 40px;
column-fill: auto;
column-gap: 10px;
border: 5px solid orange;
margin-block-end: 5px; /* Just to separate each sub-testcase visually. */
}
.flexContainer {
display: flex;
flex-wrap: nowrap;
flex-direction: column-reverse;
background: gray;
/* border-width is 0 by default; some sub-testcases will increase it. */
border: 0 solid lightgray;
}
.border-padding {
border-block-width: 10px;
padding-block: 5px;
}
/* Note: flex items are in visual order as "CMYK": cyan, magenta, yellow, black. */
footer {
background: cyan;
block-size: 50px;
}
article, nav, header {
inline-size: 30px;
}
article {
background: magenta;
block-size: 25px;
align-self: flex-start;
}
nav {
background: yellow;
block-size: 25px;
align-self: center;
}
header {
background: black;
block-size: 50px;
align-self: flex-end;
}
body.multicol-children-block-size > .multicol {
block-size: 50px;
}
</style>
<script>
function runTest() {
document.body.offsetHeight;
/* Enlarge the multicol's block-size to exercise pulling and pushing flex items
of an already fragmented flex container. */
document.body.classList.add("multicol-children-block-size");
}
</script>
<body onload="runTest()">
<!-- Basic one without any margin/border/padding. -->
<div class="multicol">
<div class="flexContainer">
<header></header><nav></nav><article></article><footer></footer>
</div>
</div>
<!-- Test a container with margin-block-start. -->
<div class="multicol">
<div class="flexContainer" style="margin-block-start: 25px">
<header></header><nav></nav><article></article><footer></footer>
</div>
</div>
<!-- Test a container not at the top of the column/page. -->
<div class="multicol">
<div style="block-size: 25px"></div>
<div class="flexContainer">
<header></header><nav></nav><article></article><footer></footer>
</div>
</div>
<!-- Test a container with border and padding. -->
<div class="multicol">
<div class="flexContainer border-padding">
<header></header><nav></nav><article></article><footer></footer>
</div>
</div>
<!-- Test a container with border, padding, and row-gap. -->
<div class="multicol">
<div class="flexContainer border-padding" style="row-gap: 5px">
<header></header><nav></nav><article></article><footer></footer>
</div>
</div>
</body>
</html>
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