#main { position: absolute;
        top: 16%;
        right: 0;
        height:70%;
        width:auto;
        left: 155px;
        overflow: auto;
        z-index:3;
      }
      #header1 {
        position: absolute;
        width: 9%;
        height: 14%;
        top: 1%;
        right: 0;
        bottom: auto;
        left: 0;
        
      }
      #header2 {
        position: absolute;
        width: 90%;
        height: 14%;
        top: 1%;
        right: 0;
        bottom: auto;
        left: 10%;
        overflow:hidden;
        z-index:2;
      }
            
      #sidebar {
        position: absolute;
        width: 150px;
        top: 16%;
        right: 150px;
        bottom: 15%;
        left: 0%;
        overflow:hidden;
      }
      #footer {
        position: absolute;
        
        height: 15%;
        z-index:1;
        right: 0;
        bottom: 0;
        left: 0;
      }