ass="btn btn-default btn-xs"><span class="glyphicon glyphicon-star" aria-hidden="true"></span> Star</button>
    </div>
  </div>
{% highlight html %}
<button type="button" class="btn btn-default" aria-label="Left Align">
  <span class="glyphicon glyphicon-align-left" aria-hidden="true"></span>
</button>

<button type="button" class="btn btn-default btn-lg">
  <span class="glyphicon glyphicon-star" aria-hidden="true"></span> Star
</button>
{% endhighlight %}
  <p>An icon used in an <a href="#alerts">alert</a