div.eg1 {border:10px solid;
         border-color:#9cf; border-top-color:#f66;
         margin:10px; background:#eee;}

div.eg2 {border:10px solid;
         border-color:#9c6; border-right-color:#9cf;
         margin:10px; background:#eee;}

div.eg3 {border:10px solid;
         border-color:9cf; border-bottom-color:#cc6;
         margin:10px; background:#eee;}

div.eg4 {border:10px solid;
         border-color:#9c6; border-left-color:#9cf;
         margin:10px; background:#eee;}