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<!DOCTYPE html>
<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/
-->
<html>
<head>
<title>CSS Test: Testing that visibility:collapse on a flex item in a multi-line flex container creates struts, and that they can migrate between lines</title>
<link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com">
<link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#algo-visibility">
<link rel="match" href="flexbox-collapsed-item-horiz-002-ref.html">
<meta charset="utf-8">
<style>
.flexContainer {
display: flex;
flex-wrap: wrap;
/* These let us show where each flex line begins (and hence, how tall
the flex lines end up) */
align-content: flex-start;
align-items: flex-start;
width: 30px;
background: yellow;
border: 1px dotted black;
float: left;
margin: 5px;
}
.collapsedItem {
visibility: collapse;
width: 15px;
height: 25px;
}
.halfWidthItem {
width: 15px;
height: 15px;
background: teal;
}
.fullWidthItem {
width: 30px;
height: 20px;
background: purple;
}
.veryTallItem {
width: 15px;
height: 40px;
background: olive;
}
</style>
</head>
<body>
<!-- FIRST ROW: -->
<!-- One collapsed flex item, at the beginning of a flex line, which
ends up establishing its flex line's cross size: -->
<div class="flexContainer">
<div class="collapsedItem"></div>
<div class="halfWidthItem"></div>
<div class="fullWidthItem"></div>
</div>
<!-- ...and now with it being at the end of that flex line: -->
<div class="flexContainer">
<div class="halfWidthItem"></div>
<div class="collapsedItem"></div>
<div class="fullWidthItem"></div>
</div>
<div style="clear: both"></div>
<!-- SECOND ROW: -->
<!-- One collapsed flex item, initially in its own line. It ends
up being merged into another line after it collapses, due to its
(post-collapse) zero main-size. -->
<div class="flexContainer">
<div class="collapsedItem"></div>
<div class="fullWidthItem"></div>
<div class="fullWidthItem"></div>
</div>
<div class="flexContainer">
<div class="fullWidthItem"></div>
<div class="collapsedItem"></div>
<div class="fullWidthItem"></div>
</div>
<div class="flexContainer">
<div class="fullWidthItem"></div>
<div class="fullWidthItem"></div>
<div class="collapsedItem"></div>
</div>
<div style="clear: both"></div>
<!-- THIRD ROW: -->
<!-- One collapsed flex item, initially in a line with an even-taller item.
The collapsed item ends up shifting into another line after it
collapses, but it carries the taller item's cross size with it, as its
strut size. -->
<div class="flexContainer">
<div class="fullWidthItem"></div>
<div class="collapsedItem"></div>
<div class="veryTallItem"></div>
</div>
<!-- ...and now with two (differently-sized) struts in first line:
(the one that's taller - due to being initially grouped with the tall
item - wins out.) -->
<div class="flexContainer">
<div class="collapsedItem"></div>
<div class="fullWidthItem"></div>
<div class="collapsedItem"></div>
<div class="veryTallItem"></div>
</div>
</body>
</html>
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