body { 
  text-align: center; 
  margin: 0 auto; 
 } 
  
 #container { 
  width: 980px;
  overflow: hidden; 
 } 
  
 #leftside { 
  float:left; 
  width: 170px;
  padding: 0;
  margin: 10px 0 0 10px;
 }
 #rightside { 
  float: right; 
  width: 170px;
  padding: 0;
  margin: 10px 10px 0 0px;
 }   
  
 #content { 
  text-align : center; 
  float: left; 
  width: 580px; 
  padding: 10px;
  margin: 10px 0px 10px 10px;
 }