.course-container{margin:0 auto;width:1180px}.course-container .course-main{padding-top:24px}.course-container .course-main .coursebuy-tab{color:#333;display:flex;font-family:MicrosoftYaHei-Bold,MicrosoftYaHei;font-size:16px;font-weight:700;line-height:18px;padding:20px 5px 10px}.course-container .course-main .coursebuy-tab div{cursor:pointer;margin-right:107px;padding-bottom:5px;position:relative}.course-container .course-main .coursebuy-tab div.active{border-bottom:2px solid #ff3f47;color:#ff3f47}.course-container .course-main .coursebuy-tab div:first-child{margin-right:136px}.course-container .course-main .coursebuy-tab div:nth-child(2){margin-right:136px;position:relative}.course-container .course-main .coursebuy-tab div:nth-child(2) .tryListen{background:#ff3f47;border-radius:2px;color:#fff;font-family:MicrosoftYaHei;font-size:12px;font-weight:400;height:18px;line-height:18px;position:absolute;right:-47px;text-align:center;top:-8px;width:42px}