.Offline_training{width:100%;height:100%}.Offline_training .nav{padding:15px;background-color:#fff;height:calc(100% - 140px);overflow:auto}.certificate{width:320px;height:649px;position:fixed;top:110px;left:300px;background-size:100% 100%;background-image:url(../img/30eb4ceb3e62c23bc90bf7b3a065922.97e57a80.png)}.Offline_training .table-tree{width:calc(100% - 30px);padding:15px}.Offline_training .table-tree table tr td:nth-child(2){text-align:left!important}