title: Scroll not working with CSS3 flex box in Firefox
body: <p>I am using <code>box-flex</code> for my layout, but I am unable to get the flex box to scroll.</p>
  
  <p><strong>HTML:</strong></p>
  
  <pre><code>&lt;div class='dashboard'&gt;
    &lt;div&gt;&lt;button&gt;Widget&lt;/button&gt;&lt;/div&gt;
    &lt;div class="noboard"&gt;&lt;button&gt;Yammer&lt;/button&gt;
    &lt;div class="yammerboard" &gt;
        &lt;div&gt;&lt;button&gt;Dashboard22&lt;/button&gt;&lt;/div&gt;
        &lt;div&gt;&lt;button&gt;Dashboard22&lt;/button&gt;&lt;/div&gt;
        &lt;div&gt;&lt;button&gt;Dashboard22&lt;/button&gt;&lt;/div&gt;
        &lt;div&gt;&lt;button&gt;Dashboard22&lt;/button&gt;&lt;/div&gt;
        &lt;div&gt;&lt;button&gt;Dashboard22&lt;/button&gt;&lt;/div&gt;
    &lt;/div&gt;
    &lt;/div&gt;
    &lt;div&gt;&lt;button&gt;Notifications&lt;/button&gt;&lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p><strong>CSS:</strong></p>
  
  <pre><code>.dashboard {
      display: box;
      display: -webkit-box;
      display: -moz-box;
      display: -ms-box;
      box-orient:vertical;
      -ms-box-orient: horizontal;
      -moz-box-orient:horizontal;
      -webkit-box-orient: horizontal;
      border: solid 2px black;
      overflow-y:auto;
  }
  .noboard {
      display: box;
      display: -webkit-box;
      display: -moz-box;
      display: -ms-box;
      box-orient:vertical;
      -ms-box-orient: vertical;
      -moz-box-orient:vertical;
      -webkit-box-orient: vertical;
      overflow-y:auto;
  }
  .yammerboard {
      display: box;
      display: -webkit-box;
      display: -moz-inline-box;
      display: -ms-box;
      box-orient:vertical;
      -ms-box-orient: vertical;
      -moz-box-orient:vertical;
      -webkit-box-orient: vertical;
      overflow-y:scroll;
      -moz-box-sizing: inherit;
      box-flex: 0;
      -ms-box-flex: 0;
      -moz-box-flex: 0;
      -webkit-box-flex: 0;
      -moz-box-lines:multiple;
  }
  </code></pre>
  
  <p>In Firefox I want it to scroll with <code>overflow:auto</code> and to stop the flex box from expanding vertically. Setting <code>box-flex: 0;</code> is not working.</p>
  
  <p>Any suggestions on how to achieve this?</p>