.introduction{width:100%;height:100%}.tup{height:315px;margin-bottom:60px;position:relative}.Instructor_template,.tup{box-shadow:0 0 53px 3px rgba(51,44,42,.17)}.Instructor_template{width:85%;background:#fff;border-radius:11px;margin:auto;padding-bottom:80px}.Instructor_template .Instructor{margin:0 434px;text-align:center}.Instructor_template .Instructor img{width:114px;height:144px;margin-top:85px}.Instructor_template .header_teacherName{text-align:center;margin-top:10px}.Instructor_template .export_detail{margin:auto}.Instructor_template .export_detail .header_bottom{margin-top:10px}.Instructor_template .export_detail .header_bottom span{display:inline-block}.Instructor_template .export_detail .header_bottom span:first-child{width:100px;text-align:right}.Instructor_template .export_detail .header_bottom span:nth-child(2){text-align:left}.Instructor_template .content{width:80%;text-align:justify;font-size:16px;font-family:Microsoft YaHei;font-weight:400;color:#343434;line-height:32px;margin:40px auto;text-indent:2em;margin-bottom:15px}