   {
                background-color: yellow;
                height: 50px;
            }
            .parentof2and3
            {
                background-color: silver;
                padding-right: 10px;
            }
            .box2
            {
                background-color: aqua;
                float: left;
                height: 20px;
                width: 20px;
            }
            .box3
            {
                background-color: orange;
                clear: left;
          