percentage-max-width-cross-axis.html

<!DOCTYPE html>
<title>CSS Flexbox: percentage max width when using 'flex-direction: column'</title>
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#flex-direction-property">
<link rel="help" href="https://drafts.csswg.org/css-sizing-3/#percentage-sizing">
<link rel="help" href="https://crbug.com/675333">
<meta name="assert" content="This test checks that an item's percentage max-width is correctly resolved when using 'flex-direction: column'">
<link rel="stylesheet" href="support/flexbox.css">

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>

<body onload="checkLayout('.flexbox')">

<p>Both bars should be the same width</p>
<div class="flexbox column" style="width: 400px;">
  <div data-expected-width="200" style="margin-left: 50%; width: 50%; background: green;">
    Content
  </div>
</div>

<div class="flexbox column" style="width: 400px;">
  <div data-expected-width="200" style="margin-left: 50%; max-width: 50%; background: blue;">
    Content
  </div>
</div>

chromium/third_party/blink/web_tests/external/wpt/css/css-flexbox/percentage-max-width-cross-axis.html