title: How to improve YSlow site performance grade for "Avoid CSS expressions"
body: <p>I am checking the grade on Yslow.  It returns me</p>
  
  <pre><code>**"Grade B on Avoid CSS expressions"**
  
  There are a total of 2 expressions
  
     http://192.168.41.66/espritKM/esprit/public/CSS/fancybox/jquery.fancybox-1.3.4.css
  </code></pre>
  
  <p>How can i improve it?</p>