<!doctype html> <!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --> <meta charset="utf-8"> <title>CSS Test: Single-line flex containers should clamp their line's height to the container's computed min and max cross-size.</title> <link rel="author" title="Emilio Cobos Álvarez" href="mailto:ecoal95@gmail.com"> <link rel="match" href="flexbox-single-line-clamp-2-ref.html"> <link rel="help" href="https://www.w3.org/TR/css-flexbox-1/#algo-cross-line"> <style> .container { display: flex; background: gray; height: 500px; flex-direction: column; max-width: 250px; } .panel { background: lightblue; border: 1px solid purple; } .small-box { width: 100px; height: 100px; } .big-box { width: 500px; height: 100px; } </style> <div class="container"> <div class="panel"> <div class="small-box"></div> </div> <div class="panel"> <div class="big-box"></div> </div> </div>