.fdy-main-wrapper{padding:10px 20px}.fdy-main-wrapper .search-class-text-con{margin:10px 0 15px 0;text-align:right}.fdy-main-wrapper .search-class-text-con .class-input-val{width:200px}.fdy-main-wrapper .back-to-course-btn{position:fixed;right:53px;top:8px;z-index:2000;padding:2px 10px}.fdy-main-wrapper .back-to-course-btn i{font-size:29px}.fdy-main-wrapper .yk-head-style-con .el-table__header tr th{background-color:#293241;color:#fff}