title: Align elements in a fieldset using flexbox
body: <p>I have a <code>form</code> with two <code>fieldsets</code> using <code>flexbox</code> to align elements. The second fieldset contains two buttons which I want display in a row and centered in this row.</p>
  
  <pre><code>/-----------------------------------\
  |     /----------\ /----------\     |
  |&lt;-x-&gt;| Button A | | Button B |&lt;-x-&gt;|
  |     \----------/ \----------/     |
  \-----------------------------------/
  </code></pre>
  
  <p>I have prepared this <a href="http://jsfiddle.net/w9k5y/" rel="nofollow">fiddle</a>.</p>