<div class="row">
  <div class="col-xs-9">.col-xs-9</div>
  <div class="col-xs-4">.col-xs-4<br>Since 9 + 4 = 13 &gt; 12, this 4-column-wide div gets wrapped onto a new line as one contiguous unit.</div>
  <div class="col-xs-6">.col-xs-6<br>Subsequent columns continue along the new line.</div>
</div>
{% endhighlight %}

  <h2 id="grid-responsive-resets">Responsive column resets</h2>
  <p>With the four tiers of grids available you're bound to run into issues where, at certain breakpoints, your columns don't c