css/css-flexbox/flex-minimum-height-flex-items-019.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="match" href="../reference/ref-filled-green-100px-square.xht" />
<link rel="issue" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1003556" />

<style>
.flex {
    display: flex;
}
.column {
    flex-direction: column;
}

.bigger-than-parent {
    height: 100%;
    min-height: 100px;
    background-color: red;
}

#reference-overlapped-green {
    position: absolute;
    background-color: green;
    width: 100px;
    height: 100px;
    z-index: 1;
}

</style>

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

<div id="reference-overlapped-green"></div>

<div id="outer" style="width: 100px; height: 300px;" class="flex">
  <div style="height: 100px; width: 100px; background: blue;" class="flex column">
      <div style="flex: 0 1 100%"></div>

      <div style="flex: 1 0 30px;">
          <div class="bigger-than-parent">
          </div>
      </div>
  </div>
</div>

<script>
onload = function() {
  var outer = document.getElementById("outer");
  outer.offsetWidth;
  outer.style.height = "200px";
};
</script>