.pic{
  width: 100%;
  height: 550px;
}
.pic img{
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about-products{
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin-top: -50px;
  height: 100px;
  padding: 0 46px;
  box-sizing: border-box;
  box-shadow:0px 0px 12px 0px rgba(21,6,10,0.1);
  background: #fff;
}
.about-products h4{
  font-size: 24px;
  margin-bottom: 12px;
  font-weight: 400;
}
.about-products span{
  font-size: 16px;
  text-transform: uppercase;
  color: #888;
}

.min-nav{
  display: flex;
  align-items: center;
  padding: 36px 0;
  font-size: 14px;
  color: #888;
}
.min-nav i{
  margin: 0 2px;
}

.course{
  width: 900px;
  margin: 24px auto 190px;
  overflow: hidden;
}
.course>h4{
  font-size: 24px;
  font-weight: 400;
  margin-bottom: 86px;
  text-align: center;
}
.course li{
  display: flex;
  /* justify-content: space-between; */
  margin-bottom: 66px;
}
.course .detail{
  width: 558px;
  color: #565656;
}
.course .detail:nth-of-type(2n-1){
  text-align: left;
}
.detail h4{
  font-size: 24px;
  margin-bottom: 18px;
}
.detail p{
  font-size: 16px;
  margin-bottom: 4px;
}
.course li img{
  padding-top: 14px;
  width: 300px;
  height: 200px;
  object-fit: cover;
}
.course li div:first-child{
  position: relative;
  width: 300px;
  margin-right: 110px;
}
.course li div:first-child::after{
  position: absolute;
  top: 0;
  left: calc(100% + 55px);
  transform: translateX(-50%);
  content: '';
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 4px solid #DDDDDD;
  background: #565656;
}
.course li div:first-child::before{
  position: absolute;
  top: 0;
  left: calc(100% + 55px);
  transform: translateX(-50%);
  content: '';
  width: 3px;
  height: 500px;
  background: #ddd;
}
.course .c-pic{
  width: 300px;
  font-size: 0;
}
.course .c-pic p{
  width: 100%;
  height: 45px;
  line-height: 45px;
  text-align: center;
  font-size: 14px;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
  color: #fff;
  background: #666666;
}

.more-course{
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100px;
  height: 100px;
  line-height: 24px;
  margin-left: 355px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: #888888;
  color: #fff;
}