dth="25" height="10"></canvas>
</div>

<!-- In testcase, flex item is itself a flex container: -->
<div class="container">
  <div class="item innerFlex">
    <innerItem></innerItem>
    <innerItem></innerItem>
    <innerItem></innerItem>
  </div>
</div>

<!-- In testcase, flex item is itself a multi-line flex container: -->
<div class="container">
  <div class="item innerFlex" style="flex-wrap: wrap">
    <innerItem></innerItem>
    <innerItem></innerItem>
    <innerItem></innerItem>
  </div>
</div>

</body