title: How to chain pseudo selectors in SASS
body: <p>I'm trying to put together a selector in SASS that will operate on the visted, hovered state of a link, but I can't quite seem to get the markup right, can someone enlighten me?
  I was writing it like this:</p>
  
  <pre><code> &amp;:visited:hover
       attribute: foo
  </code></pre>