#left{
       position: absolute;
       top: 0;
       left: 0;
       width: 20%;
       height: 100%;
       }
#right{
       position: absolute;
       top: 0;
       left: 20%;
       width: 80%;
       height: 100%;
       border-left: 2px solid #ccc;
       }
#main {position: absolute;
       top: 0;
       left: 0px;
       width: 100%;
       height:85%;
       }
#bottom {position: absolute;
       top: 85%;
       left: 0px;
       width: 100%;
       height: 15%;
       border-top: 2px solid #ccc;
       }
iframe{
       border: none;
       height: 100%;
       width: 100%;
       }