title: Detect unused CSS rules
body: <p>I am developing a website.<br>
  I use ready template.this template contains many css files with many css rules.<br>
  But I have few pages and I am sure I didn't use all selectors.<br>
  Is there any tool exist for scanning project HTML files and finding unused css rules and remove them ?
  <br>
  I found <a href="https://stackoverflow.com/questions/1320374/is-there-anyway-to-find-unused-css-in-a-website">this question</a> that says :</p>
  <blockquote>
  <p><a href="http://www.sitepoint.com/dustmeselectors/" rel="nofollow noreferrer">Dust-me Selectors</a> is a firefox plugin that finds unused selectors.</p>
  </blockquote>
  <p>But its not compatible with FF6 and seems it just review current viewing page and not scans whole website files.</p>