#selCourseType{display:-webkit-flex;display:flex;-webkit-justify-content:space-evenly;justify-content:space-evenly;-webkit-align-items:center;align-items:center;margin-bottom:20px}#selCourseType div{font-size:1.4rem;font-family:PingFang SC;color:#000;line-height:30px;cursor:pointer;font-weight:500}#selCourseType div:last-child{margin-right:0}#selCourseType div.active{color:#ffc000;border-bottom:2px solid #ffc000;font-weight:550}.explainText p{font-size:16px;font-weight:550;line-height:30px;color:#666}.explainText span{font-size:14px;line-height:24px;color:rgba(102,102,102,1)}.explainText img{width:100%;margin:20px 0}#teacherText{display:none}#yellowColor{color:#ffc000}