` in their markup in which the page is contained. It might look something like this:


    
    
      
      
        [content]
        
      
      
    
    
    /* CSS */
    body{
      font-family:sans-serif;
      background:#fff;
      color:#333;
    }
    #wrapper{
      width:940px;
      margin:0 auto;
    }

It _most_ situations this could be simply rewritten:


    
    
      [content]
      
    
    
    /* CSS */
    body{
      font-family:sans-serif;
      background:#fff;
      color:#333;
      width:940px;
      margin:0 auto;
    }

You `` _is_ a container. Obviously there will be _some_ instances where this won't be suitable--and you'll spot what those are as you come across them--but for the most part, you can drop that unnecessary wrapper `

` and **use the `` element as a wrapper**. Hat-tip to [Simon Wiffen](http://twitter.com/simonwiffen) for showing me this a while ago.