ul.tab{list-style-type:none;margin:0;padding:0;overflow:hidden;border:1px solid #ccc;background-color:#f1f1f1}ul.tab li{float:left}ul.tab li a{display:inline-block;color:#000;text-align:center;padding:14px 16px;text-decoration:none;transition:.3s;font-size:17px}ul.tab li a:hover{background-color:#ddd}.active,ul.tab li a:focus{background-color:#ccc}.tabcontent{display:none;padding:30px;border:1px solid #ccc;border-top:none}.topright{float:right;cursor:pointer;font-size:20px}.topright:hover{color:red}