title: Specific Bootstrap Modal to change modal-backdrop colour/opacity
body: <p>I have a problem which I can't edit the styling for specific modal, but only for all modal using the css below:</p>
  
  <pre><code>.modal-backdrop {background:red;}
  </code></pre>
  
  <p>But what can I do to change only the styling for the second modal, but not all modal?</p>
  
  <p>Codepen: <a href="http://codepen.io/rae0724/pen/woQpqv" rel="nofollow noreferrer">http://codepen.io/rae0724/pen/woQpqv</a></p>