css/css-flexbox/flex-minimum-height-flex-items-018.html

<!DOCTYPE html>
<title>CSS Flexbox: min-height: auto with flex items containing percentage-sized children</title>
<link rel="author" title="Google LLC" href="https://www.google.com/" />
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#min-size-auto" />
<link rel="issue" href="https://bugs.chromium.org/p/chromium/issues/detail?id=998080" />
<link rel="match" href="../reference/ref-filled-green-100px-square.xht" />

<style>
.flexbox {
  display: flex;
  width: 100px;
  height: 0;
  flex-direction: column;
}
.item {
  /* Because the flexbox has height:0, this would flex-shrink to 0. So we rely
   * on min-height: auto to get a nonzero height.  */
  height: 100px;
  background: green;
}
.percentage {
  height: 100%;
}
.fixed {
  height: 100px;
}

</style>

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

<div class="flexbox">
    <div class="item">
        <div class="percentage">
          <div class="fixed"></div>
        </div>
    </div>
</div>