wpt/css/css-sizing/stretch/flexbox-stretch-minimum-001.html at master · web-platform-tests/wpt · GitHub

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<!DOCTYPE html>
<meta charset="utf-8">
<title>Non-negative content-box size of stretched flex item with `stretch` min cross size</title>
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com">
<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#stretch-fit-sizing">
<link rel="help" href="https://drafts.csswg.org/css-flexbox-1/#stretched">
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/11076">
<link rel="help" href="https://github.com/servo/servo/issues/38517">
<link rel="match" href="../../reference/ref-filled-green-200px-square.html">
<meta assert="Stretching the cross size of a flex item to the flex line should never result
              in a negative content-box size.">

<style>
#red {
  position: absolute;
  z-index: -1;
  width: 200px;
  height: 200px;
  background: red;
}
#flex-container {
  display: flex;
  flex-direction: row;
  height: 0;
}
#flex-item {
  min-height: stretch;
  border: 100px solid green;
}
</style>

<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div id="red"></div>
<div id="flex-container">
  <div id="flex-item"></div>
</div>