.banner {
  background: url(../images/video/banner.jpg) no-repeat center center;
  background-size: cover;
  font-family: Arial;
  padding: 1.1rem 0;
}
.banner .banner-text {
  text-align: center;
  font-weight: 700;
  padding: 0 0.3rem;
  font-size: 0.36rem;
  line-height: 0.5rem;
  color: #fff;
  text-shadow: 0.05rem 0.05rem 0.05rem rgb(0, 0, 0);
}

.video-first {
  font-family: Arial;
  position: relative;
  margin-bottom: 0.25rem;
  padding: 0 0.3rem;
}
.video-first .video-tabs {
  display: flex;
  flex-direction: row;
  justify-content: center;
}
.video-first .video-tabs .tab-item {
  text-align: center;
  color: #757575;
  font-size: 0.28rem;
  line-height: 1.5;
  padding: 0.15rem;
}
.video-first .video-tabs .active {
  color: #e94609;
  border-bottom: 0.02rem solid #e94609;
}
.video-first .vr-line {
  height: 1px;
  width: 100%;
  background-color: #e5e5e5;
}
.video-first .video-contents .content-item {
  width: 100%;
}
.video-first .video-contents .content-item .video-list {
  margin-top: 0.15rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}
.video-first .video-contents .content-item .video-list .video-item {
  width: 48%;
  margin-top: 0.3rem;
}
.video-first .video-contents .content-item .video-list .video-item:hover .img-box::before {
  opacity: 0;
}
.video-first .video-contents .content-item .video-list .video-item .img-box {
  position: relative;
}
.video-first .video-contents .content-item .video-list .video-item .img-box::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  left: 0;
  top: 0;
  z-index: 1;
  transition: all 0.3s;
}
.video-first .video-contents .content-item .video-list .video-item .img-box .video-img {
  width: 100%;
  height: auto;
  display: block;
}
.video-first .video-contents .content-item .video-list .video-item .img-box .video-ico {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  width: 0.52rem;
  height: auto;
}
.video-first .video-contents .content-item .video-list .video-item .video-name {
  width: 100%;
  color: #757575;
  text-align: center;
  font-size: 0.28rem;
  line-height: 1.5;
  padding: 0.1rem 0.1rem 0.08rem;
}