title: Bootstrap right Column on top on mobile view
body: <p>I have a Bootstrap Page like this:</p>
  
  <pre><code>&lt;div class="row"&gt;
      &lt;div class="col-md-6"&gt;
          A
      &lt;/div&gt;
      &lt;div class="col-md-6"&gt;
         B
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>Looks like:</p>
  
  <pre><code>-----
  |A|B|
  -----
  </code></pre>
  
  <p>So if I look at it on a mobile Device, the Column A is on top, but I want the B on top.
  Is this possible?
  I tried it with push an pull, but it didn't work.</p>