.page-wrapper {
  background: url('../../imgs/know/bg.png') no-repeat left 0px bottom 400px;
  background-size: contain;
  padding-bottom: 110px;
}
.news-box, .video-box {
  width: 1200px;
  margin: 0 auto;
  padding-left: 300px;
  box-sizing: border-box;
  padding-top: 84px;
  
}
.news-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 800px;
}
.news-list {
  position: relative;
  z-index: 99;
}
.news-list a {
  display: block;
}
.news-list a:hover {
  text-decoration: none;
}
.news-list-item {
  height: 244px;
  background: #FFFCF9;
  border-radius: 10px 10px 10px 10px;
  margin-bottom: 16px;
  padding: 28px 20px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
}
.news-list-item .item-img {
  width: 210px;
  height: 188px;
  margin-right: 20px;
}
.news-list-item .item-img img {
  width: 210px;
  height: 188px;
}
.news-list-item .item-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  font-size: 18px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #999999;
}
.news-list-item .item-info h5 {
  margin-bottom: 13px;
  font-size: 26px;
  font-family: Source Han Sans CN-Medium, Source Han Sans CN;
  font-weight: 500;
  color: #000000;
  line-height: 39px;
}
.news-list-item .item-info .desc {
  font-size: 18px;
  font-family: Source Han Sans CN-Regular, Source Han Sans CN;
  font-weight: 400;
  color: #999999;
  line-height: 29px;
  width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  display:-webkit-box;
  -webkit-box-orient:vertical;
  -webkit-line-clamp:2;
  margin-bottom: 20px;
}
.item-detail {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  
}
.item-detail div {
  display: flex;
  align-items: center;
}
.item-detail img {
  width: 16px;
  height: 16px;
  margin-right: 8px;
}

/*视频*/
.video-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}
.video-item {
  width: 425px;
  height: 254px;
  position: relative;
  margin-bottom: 30px;
  background-color: #FFFCF9;
  position: relative;
  z-index: 99;
}
.video-item .shadow {
  width: 425px;
  height: 254px;
  background-color: rgba(0, 0, 0, 0.49);
  position: absolute;
  top: 0;
  left: 0;
  border-radius: 10px;
  -webkit-border-radius: 10px;
  -moz-border-radius: 10px;
  -ms-border-radius: 10px;
  -o-border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.shu {
  width: 1px;
  height: 94px;
  background-color: #4D4D4D;
}