.back{font-size:16px;cursor:pointer;margin:10px 0;height:20px;text-align:left;width:200px}.back:hover{color:#17202e}@media screen and (max-width:768px){.back{margin:10px 0}}.contract-info{background-color:#f9fafd}.contract-info .card_long{height:140px}.contract-info .el-tabs{margin:30px auto 0}