title: Bootstrap danger class not working for a table row
body: <p>I have the following table in my Rails app:</p>
  
  <pre><code>&lt;table class='table table-bordered table-hover table-striped'&gt;
      &lt;thead&gt;
        &lt;tr&gt;
          &lt;th&gt;ID&lt;/th&gt;
          &lt;th&gt;Status&lt;/th&gt;
        &lt;/tr&gt;
      &lt;/thead&gt;
  
      &lt;tbody&gt;
        &lt;tr class='danger'&gt;
          &lt;td&gt;&lt;%= order.id %&gt;&lt;/td&gt;
          &lt;td&gt;&lt;%= order.status.name %&gt;&lt;/td&gt;
        &lt;/tr&gt;
      &lt;/tbody&gt;
    &lt;/table&gt;
  </code></pre>
  
  <p>And the row with class 'danger' doesn't change the color. However, if I use the class 'success' it changes correctly.</p>
  
  <p>I am using the twitter-bootstrap-rails gem.</p>