title: Statically rotate font-awesome icons
body: <p>I'd like to statically rotate my font-awesome icons by 45 degrees. It says on the site that:</p>
  
  <blockquote>
    <p>To arbitrarily rotate and flip icons, use the fa-rotate-* and fa-flip-* classes.</p>
  </blockquote>
  
  <p>However, doing</p>
  
  <pre><code>&lt;i class="fa fa-link fa-rotate-45" style="font-size:1.5em"&gt;&lt;/i&gt;
  </code></pre>
  
  <p>does not work, whereas replacing <code>fa-rotate-45</code> with <code>fa-rotate-90</code> does. Does this mean that they in fact cannot rotate arbitrarily?</p>