.online-course-container {
  width: 1200px;
  margin: 0 auto;
}
.oc_banner {
  margin-top: 24px;
  width: 1200px;
  height: 464px;
  background: #FFFFFF;
  box-shadow: 2px 2px 8px 0px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
}
.oc_banner_main {
  display: flex;
  width: 100%;
  height: 368px;
  background: #D8D8D8;
  border-radius: 8px 8px 0px 0px;
}
.oc_banner_banner {
  position: relative;
  flex: 1;
  overflow: hidden;
  border-radius: 0px 8px 0px 0px;
}
.oc_banner_banner img {
  width: 100%;
  height: 100%;
}
.oc_banner_bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 96px;
  padding: 0 50px;
}
.oc_banner_bottom li {
  display: flex;
  align-items: center;
  height: 100%;
}
.oc_banner_bottom .l {
  width: 48px;
  height: 48px;
  margin-right: 8px;
}
.oc_banner_bottom .l img {
  width: 100%;
  height: 100%;
}
.oc_banner_bottom .r {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.oc_banner_bottom .r h4 {
  font-size: 14px;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: bold;
  color: #333333;
  margin-bottom: 4px;
}
.oc_banner_bottom .r span {
  font-size: 12px;
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight: 400;
  color: #999999;
}
.oc_banner_banner .swiper-pagination-bullet {
  width: 10px;
  height: 10px;
  margin-right: 4px;
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(0, 0, 0, 0.2);
}
.oc_banner_banner .swiper-pagination-bullet-active {
  width: 13px;
  height: 13px;
  display: inline-block;
  background: rgba(255, 255, 255, 0.7);
  border: 3px solid rgba(0, 0, 0, 0.3);
}
.oc_banner_banner .swiper-button_btn {
  left: 0;
  width: 25px;
  height: 35px;
  border-top-right-radius: 18px;
  border-bottom-right-radius: 18px;
  background-color: rgba(0, 0, 0, 0.15);
  transition: all 0.2s;
  -webkit-user-select: none;
          user-select: none;
}
.oc_banner_banner .swiper-button_btn:hover {
  background-color: rgba(0, 0, 0, 0.5);
}
.oc_banner_banner .swiper-button_btn::after {
  content: '';
}
.oc_banner_banner .swiper-button_btn i {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
}
.oc_banner_banner .swiper-button-prev i {
  transform: rotate(-180deg) translateX(3px);
}
.oc_banner_banner .swiper-button-next {
  left: unset;
  right: 0;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  border-top-left-radius: 18px;
  border-bottom-left-radius: 18px;
}
.oc_banner_banner .swiper-button-next i {
  transform: translateX(3px);
}