.top{position:sticky;top:0;z-index:99}.top .container{height:140px;background-color:#f2f2f2}.top .container .teacher_info{width:94%;margin:0 auto;height:120px;border-radius:6px;background:linear-gradient(90deg,#1989fa,#3794fc);box-shadow:0 2px 5px #1989fa}.top .container .teacher_info .info{display:block;width:92%;height:120px;margin:0 auto}.top .container .teacher_info .info .div_btn{float:right;height:120px;display:flex;flex-direction:column}.top .container .teacher_info .info .div_btn .class_btn,.top .container .teacher_info .info .div_btn .manage_btn{margin-top:25px}.top .container .teacher_info .info img{width:60px;height:60px;border-radius:50%;margin-top:4px;display:inline-block;overflow:hidden;margin-top:30px}.top .container .teacher_info .info .teacher_desc{display:inline-block;margin-left:10px;line-height:20px;font-size:14px;color:#fff}.top .container .teacher_info .info .teacher_desc span{display:block;color:#fff;font-size:14px;padding:2px 0;text-align:left}