title: Placing columns inside bootstrap modal
body: <p>I'm trying to get a Bootstrap model to have multiple columns inside it, however it does not appear to be working with my content appear vertically as opposed to in columns. My code is here:</p>
  
  <pre><code>&lt;div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"&gt;
      &lt;div class="modal-dialog modal-lg"&gt;
          &lt;div class="modal-content"&gt;
              &lt;div class="modal-header"&gt;
                  &lt;button type="button" class="close" data-dismiss="modal" aria-hidden="true"&gt;&amp;times;&lt;/button&gt;
                  &lt;h4 class="modal-title" id="myModalLabel"&gt;Modal&lt;/h4&gt;
              &lt;/div&gt;
              &lt;div class="modal-body"&gt;
                  &lt;div class="row"&gt;
                      &lt;div class="row-md-6"&gt;
                          Left
                      &lt;/div&gt;
                      &lt;div class="row-md-6"&gt;
                          Right
                      &lt;/div&gt;
                  &lt;/div&gt;
  
              &lt;/div&gt;
              &lt;div class="modal-footer"&gt;
                  &lt;button type="button" class="btn btn-default" data-dismiss="modal"&gt;Close&lt;/button&gt;
                  &lt;button type="button" class="btn btn-primary"&gt;Save changes&lt;/button&gt;
              &lt;/div&gt;
          &lt;/div&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>I've found a few things around that solved this issue with Bootstrap 2, but they don't work with Bootstrap 3. I've also tried changing the <code>row-md-6</code> to <code>sm</code>, <code>xs</code> etc, but no luck. Is it possible to do it in Bootstrap 3? Columns would be the most ideal thing for me, but should I avoid columns all together? </p>