title: Firebug and CSS cache not showing new selectors
body: <p>I'm confused by some behavior in Firebug. </p>
  
  <p>I'm trying to update my CSS and I made changes to the actual CSS file and saved them.</p>
  
  <p>If I update a directive on an existing selector, those changes will be rendered when I reload the page.
  However, if I add a new class ( e.g. boxQuestion ), and create a new selector, it won't render at all.
  The new selector doesn't seem to be displaying at all. Neither in the rendered HTML or in what Firebug is displaying.</p>
  
  <p>I have tried clearing the cache and restarting my development server, but it still won't add the new selectors.</p>
  
  <p>What am I doing wrong?</p>
  
  <p>I'm developing in Django and using runserver.</p>