css/css-flexbox/flexbox_align-items-stretch-4.html

<!DOCTYPE html>
<title>Auto cross margins and align-items: stretch</title>
<link rel="author" title="David Grogan" href="mailto:dgrogan@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#algo-stretch">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<meta name="flags" content="" />
<meta name="assert" content="Auto cross margins prevent an item from stretching." />
<link rel="bookmark" href="https://crbug.com/1015475" />
<style>
x-flexbox {
  display: flex;
  /* This makes auto margins prevent stretching without affecting position. Without
     it the auto margins make the item move to the center of the window. */
  width: 100px;
}

.item-with-auto-margin {
  background: green;
  margin: auto;
}

.pct-height-child {
  height: 100%;
  width: 100px;
  background: red;
}

.second-child {
  height: 100px;
}
</style>

<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>

<x-flexbox>
  <div class=item-with-auto-margin>
    <div class="pct-height-child"></div>
    <div class="second-child"></div>
  </div>
</x-flexbox>