title: bootstrap 3 scaling text
body: <p>I've just started using bootstrap 3 and whilst playing with the layout I can't seem to get the text to scale on my mobile when within a jumbotron h1 tag. I'm trying to copy the jumbotron on the getbootstrap site which has large text that scales down when the viewport changes.</p>
  
  <pre><code>    &lt;div class="row"&gt;
    &lt;div class="col-xs-12"&gt;
      &lt;div class="jumbotron"&gt;
        &lt;div class="container"&gt;
        &lt;center&gt;&lt;span class="h1"&gt;Testing Jumbotron &lt;/span&gt;&lt;/center&gt;
        &lt;div class="col-xs-2 col-xs-offset-5 btn-info btn btn-sm"&gt;Full&lt;/div&gt;
      &lt;/div&gt;
    &lt;/div&gt;  
  &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>I've just looked at an example and it seems the heading does scale within bootstrap 3 ... but maybe because I'm using flat-ui it has broken this? </p>