.banner {
  height: 160px;
  background: url(https://cdn.c8hr.com/api_files/res/img/banner/2021-05-31-anli.png) no-repeat center center / auto auto;
  position: relative;
}
.banner > div {
  position: absolute;
  left: 50%;
  top: 50%;
  -webkit-transform: translate(-597px, -50%);
  -moz-transform: translate(-597px, -50%);
  -ms-transform: translate(-597px, -50%);
  -o-transform: translate(-597px, -50%);
  transform: translate(-597px, -50%);
  color: #fff;
}
.banner > div h5 {
  font-size: 30px;
  text-align: left;
}
.banner > div p {
  margin-top: 11px;
  font-size: 18px;
}
h4 {
  position: relative;
  font-size: 24px;
}
/* h4::after {
  content: '';
  position: absolute;
  width: 40px;
  height: 3px;
  left: 0;
  top: 33px;
  background-color: #436FF1;
} */
h4 label{
    padding-bottom: 10px;
    cursor: pointer;
}
h4 label:first-child{
    margin-right: 20px;
}
/* h4 label.active{
    border-bottom: 4px solid #436FF1;
} */
.w1200 {
  width: 1200px;
  margin: 0 auto;
  position: relative;
}
.w1200 h4 {
  margin: 80px 0 90px 0;
}
.w1200 .detail {
  margin: 0 -20px;
  font-size: 0;
}
.w1200 .pou {
  margin: 0 19px;
  display: inline-block;
  text-align: left;
  width: 374px;
  font-size: 14px;
  cursor: pointer;
  vertical-align: top;
  line-height: 1.5;
  margin-bottom: 115px;
}
.w1200 .pou video {
  outline: none;
}
.w1200 .pou .ti {
  margin-top: 16px;
  font-size: 24px;
  font-weight: bold;
}
.w1200 .pou p {
  margin-top: 8px;
  font-size: 14px;
  cursor: pointer;
}
.w1200 .player {
  width: 374px;
  height: 222px;
  -webkit-border-radius: 4px;
  -moz-border-radius: 4px;
  border-radius: 4px;
  overflow: hidden;
}
.yettp{
    position: relative;
	margin-bottom: 44px;
    font-size: 24px;
    text-align: center;
}
.w1200 label:before {
  content: "";
  position: absolute;
  transition: all .3s ease;
}
.w1200 label:before {
  border-radius: 0;
  width: 0;
  border-bottom: 4px solid #436FF1;
  left: 50%;
  bottom: 0;
}
.w1200 label.active:before {
  width: 100%;
  left: 0;
}
.w1200 label{
  position: relative;
}
.pou:before {
  display: inline-block;
  width: 374px;
  content: ">>";
  line-height: 222px;
  font-size: 28px;
  text-align: center;
  position: absolute;
  opacity: 0;
  background: rgba(0,0,0,0.5);
  color: #fff;
  border-radius: 4px;
}
.pou:hover>p{
  color: #436ff1;
}
.pou:hover::before{
  opacity: 0.7;
  transition: all 0.5s ease-out;
}
.yearSelect{
  position: absolute;
  right: 0;
  top: 0;
  padding: 0 10px;
}