set-x="400" style="width: 200px;"></div>
</div>

<!-- We overflow the flexbox (no negative flexing) and align the end. The overflow is to the left. -->
<div class="flexbox" style="-webkit-justify-content: flex-end">
  <div data-expected-width="300" data-offset-x="-100" style="-webkit-flex: 1 0 300px;"></div>
  <div data-expected-width="200" data-offset-x="200" style="width: 200px;"></div>
  <div data-expected-width="200" data-offset-x="400" style="width: 200px;"></div>
</div>

</body>
</html>
