title: CSS and Firefox
body: <p>When I use the folowing CSS code on Firefox, I get a gap between the banner and the top of the screen. How can I avoid this?</p>
  
  <pre><code>#container1
  {
  position:absolute;
  left: 0px;
  right: 0px;
  width: 1000px;
  height: 255px;
  margin:  0;
  
  
  }
  #logo1 {   
   background:#FFFFFF; 
    margin: 0;    
    border: 1px solid red; 
     position:absolute;   
      left: 0px;   
       top: 0px;    
       width: 200px;  
         height: 250px;
  
         }
  #Banner1 {    
  background: #1071A6;    
  position:absolute;    
  left: 200px;    
  top: 0px;   
   width: 789px;    
   height: 250px;
   vertical-align:top;
    margin:  0;    border:  1px solid red;
   }
  </code></pre>