*{margin:0;padding:0;}
.container{width:100%;height:600px;background:URL("abc.jpg") blue;background-size:cover;}
.clear{clear:both;}
#header{width:100%;height:50px}
.navbar{border:1px solid black}
.navbar-brand{border:0.5px solid black;padding:1px}
.row1{margin:2px;padding:2px;border:1px solid black;width:100%;}
.col{border:1px solid gray;}
#content{width:100%;height:500px}
#left{width:48%;height:500px;overflow-Y:auto;padding:5px;background:white;float:left}
#right{width:48%;height:500px;overflow-Y:auto;padding:5px;background:white;float:right}
#footer{width:100%;height:50px}
.btn{border:0.5px solid gray;padding:5px}
.btn1{border:1px solid gray;padding:5px}