.main-content-introduction-title{
  text-align: center;
}
.main-content-introduction-title h1{
  font-family: 'PingFang SC', sans-serif;
  font-size: 32px;
  color: #000;
}
.main-content-introduction-title p{
  font-family: 'PingFang SC', sans-serif;
  font-size: 24px;
  color: #000;
  margin-top: 20px;
}
.main-content-course-introduction{
  background: #fff;
  padding: 53px 0;
  position: relative;
  width: 1200px;
  margin: auto;
}
.main-content-introduction-con{
  margin-top: 64px;
  overflow: hidden;
}
.main-content-introduction-con img{
  float: left;
}
.main-content-introduction-text{
  margin-left: 33px;
  float: left;
}
.main-content-introduction-text p{
  width: 100%;
  font-family: 'PingFang SC', sans-serif;
  font-size: 22px;
  line-height: 66px;
}
.main-content-introduction-text p img{
  float: left;
  margin: 15px 16px 0 0;
}

.backgroungimages{
  overflow: hidden;
  margin-top: 34px;
}
.backgroungimages li{
  float: left;
  margin-right: 20px;
}
.backgroungimages li:last-child{
  margin-right: 0;
}
.mt{
  margin-top: 20px;
}
.main-content-instructor-team{
  width: 100%;
  overflow: hidden;
  background-color: #fff;
  padding: 93px 0 26px 0;
}
.main-content-instructor-team-con{
  width: 1200px;
  margin: auto;
}
.main-content-instructor-team-item li{
  float: left;
  border: 1px solid #dfdfdf;
  border-radius: 50px;
  width: 287px;
  font-family: 'PingFang SC', sans-serif;
  height: 600px;
  margin: 38px 14px 0 0;
}
.main-content-instructor-team-item li:last-child{
  margin-right: 0;
}
.teacher-introduction{
  padding: 0 20px;
}
.teacher-introduction h1{
  margin-top: 20px;
  font-size: 16px;
  color: #949494;
  font-weight: normal;
}
.teacher-introduction h1 span{
  font-size: 24px;
  color: #000;
}
.teacher-introduction h2{
  margin-top: 13px;
  font-size: 16px;
  color: #949494;
  font-weight: normal;
}
.teacher-introduction p{
  margin-top: 23px;
  font-size: 16px;
  color: #949494;
  line-height: 28px;
}
.main-content-instructor-team-con-list{
  width: 1200px;
  margin: 67px auto;
  overflow: hidden;
}
.main-content-instructor-team-con-list li{
  margin-right: 114px;
  font-family: 'PingFang SC', sans-serif;
  text-align: center;
  float: left;
}
.main-content-instructor-team-con-list li:last-child{
  margin-right: 0;
}
.main-content-instructor-team-con-list li h1{
  font-size: 28px;
  color: #000;
  margin-top: 30px;
}
.main-content-instructor-team-con-list li p{
  font-size: 20px;
  margin-top: 24px;
  color: #5e5e5e;
  line-height: 33px;
}
.studentmt{
  margin-top: 26px !important;
}
.studentmts{
  margin-top: 43px !important;
}
.student-charm{
  width: 1200px;
  margin: 33px auto;
  overflow: hidden;
}
.student-charm li{
  float: left;
  margin-right: 15px;
}
.student-charm li:last-child{
  margin-right: 0;
}
.charmitem li{
  margin-right: 20px !important;
}
.charmitem li:last-child{
  margin-right: 0 !important;
}




.bg{
  background-color: #f5f5f5 !important;
}
.studenttitle{
  font-family: 'PingFang SC', sans-serif !important;
  color: #7e7e7e !important;
  font-size: 20px !important;
}
#container {
  overflow: hidden;
  width: 100%;
  margin: 40px auto;

}
#container-item-warp {
  float: left;
  width: 800%;
}
#container-item {
  float: left;
}
#container-item-s {
  float: left;
}