div#header {
     position:fixed;
     top:0px;
     left:0px;
     width:100%;
     color:#fff;
     background:#fff;
     padding:8px;
 }
 div#footer {
     position:fixed;
     bottom:0px;
     left:0px;
     width:100%;
     color:#fff;
     background:#fff;
     padding:8px;
 }
 
div#content{

  position: static;
  overflow: auto; padding:50px 0;  /* gap between header and footer */

}