<?xml version="1.0" encoding="UTF-8"?> <!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --> <!-- This testcase checks how "min-height" and "max-height" affect the sizing of vertical flex containers that have no explicit "height" property. --> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>CSS Test: Testing sizing of an auto-sized vertical flex container with min-height and max-height constraints</title> <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com"/> <link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#layout-algorithm"/> <link rel="match" href="flexbox-sizing-vert-001-ref.xhtml"/> <style> div { width: 10px; } div.flexbox { float: left; border: 1px dashed blue; font-size: 10px; display: flex; flex-direction: column; margin-right: 2px; } div.a { flex: 1 20px; max-height: 60px; background: lightgreen; } div.b { flex: 1 20px; min-height: 40px; max-height: 60px; background: purple; } div.c { flex: 1 40px; min-height: 10px; max-height: 60px; background: orange; } </style> </head> <body> <!-- floated auto-sized vertical flexbox should shrinkwrap its flex items' hypothetical main sizes (their flex base sizes, clamped to min/max) --> <div class="flexbox"> <div class="a"/><div class="b"/><div class="c"/> </div> <!-- Adding a small min-size shouldn't affect that. --> <div class="flexbox" style="min-height: 10px"> <div class="a"/><div class="b"/><div class="c"/> </div> <!-- ...nor should a large max-size. --> <div class="flexbox" style="max-height: 300px"> <div class="a"/><div class="b"/><div class="c"/> </div> <!-- OK. Now, if we set a minimum size that's larger than the shrinkwrap size, we should jump up to that size.--> <div class="flexbox" style="min-height: 120px"> <div class="a"/><div class="b"/><div class="c"/> </div> <!-- ...even if it's large enough that our items won't occupy all the space. --> <div class="flexbox" style="min-height: 200px"> <div class="a"/><div class="b"/><div class="c"/> </div> <!-- If we set a maximum size that's smaller than the shrinkwrap size, we should max out at that size.--> <div class="flexbox" style="max-height: 70px"> <div class="a"/><div class="b"/><div class="c"/> </div> <!-- The max-size may be small enough that our items will overflow. --> <div class="flexbox" style="max-height: 20px"> <div class="a"/><div class="b"/><div class="c"/> </div> <!-- But if we add a min-size, it beats the max-size. Here, we use a min-size smaller than the sum of the items' base sizes... --> <div class="flexbox" style="min-height: 58px; max-height: 20px"> <div class="a"/><div class="b"/><div class="c"/> </div> <!-- ...and here we use a min-size larger than the sum of the items' base sizes. --> <div class="flexbox" style="min-height: 140px; max-height: 20px"> <div class="a"/><div class="b"/><div class="c"/> </div> </body> </html>