title: Font Awesome need inverse
body: <p>Need a help to inverse icon.. I know that I can actually use fa-inverse but how I using this here? 
  My css code:</p>
  
  <pre><code>hr.style-eight:after {
      font-family: FontAwesome;
      content: "\f0ad";
      display: inline-block;
      position: relative; 
      top: -0.7em;  
      font-size: 1.5em;
  
      padding: 0 0.25em;
      background:#333333;
  }
  </code></pre>
  
  <p>Thanks!</p>