.yk-course-open-manager{margin:30px}.yk-course-open-manager .back-to-course-btn{position:fixed;right:53px;top:8px;z-index:2000;padding:2px 10px}.yk-course-open-manager .back-to-course-btn i{font-size:29px}.yk-course-open-manager .course-open-li{border-radius:4px;background:#3f5880;margin-bottom:20px}.yk-course-open-manager .course-cover-img{float:left;width:204px;height:120px}.yk-course-open-manager .course-cover-img img{width:100%;height:100%;border-radius:4px 0 0 4px}.yk-course-open-manager .course-info-text{float:left;margin-left:20px;color:#fff}.yk-course-open-manager .course-info-text .text-course-name{line-height:30px;font-size:16px}.yk-course-open-manager .p-class-text{line-height:30px}.yk-course-open-manager .course-btn-link{float:right;margin-right:20px}.yk-course-open-manager .course-btn-link .p-found-time{margin:10px 0;font-size:14px;color:#ccc}.yk-course-open-manager .course-btn-link .found-btn{width:140px;height:34px;background:#409eff;border-radius:3px;color:#fff;font-size:16px;text-align:center;line-height:34px;cursor:pointer;margin-top:40px}.yk-course-open-manager .p-class-number{text-align:right;margin:10px 0;font-size:16px;line-height:25px;color:#f25656}