title: Flexbox stretch columns (or not)
body: <p>Using the "old" flexbox implementation, I would use <code>-webkit-box-align: start;</code> to stop side by side columns from being of equal length.</p>
  
  <p>I can't figure out how to do this under the new spec - <a href="https://developer.mozilla.org/en/Using_flexbox" rel="nofollow">https://developer.mozilla.org/en/Using_flexbox</a>.</p>
  
  <p>My main div is <code>&lt;div role="main"&gt;</code> and it has two <code>&lt;section class="app"&gt;</code> side by side within the div.</p>