.txw_about_bg{
    margin-top: 106px;
    width: 100%;
    height: 450px;
    background: url('https://cdn.chinabidding.cn/public/yuanbo/images/aboutUs_bg.png') no-repeat center;
    background-size: cover;
}

.txw_about_introduce{
    width: 100%;
    height: 307px;
    background-color: #fff;
    padding: 70px 0 38px 0;
}
.txw_about_introduce .introduce_words{
    float: left;
    width: 630px;
}
.txw_about_introduce .introduce_words h4{
    font-size: 36px;
    line-height: 72px;
    color: #333;
    font-weight: normal;
}
.txw_about_introduce .introduce_words p{
    font-size: 18px;
    line-height: 36px;
    color: #666;
    text-indent: 4rem;
    text-align: justify;
}
.txw_about_introduce .introduce_video{
    float: right;
    width: 490px;
    position: relative;
}
.txw_about_introduce .introduce_video img{
    width: 490px;
    height: 307px;
}
.txw_about_introduce .introduce_video .video_btn{
    position: absolute;
    left: 50%;
    top: 50%;
    width: 62px;
    height: 62px;
    margin-left: -31px;
    margin-top: -31px;
    background: url('../../images/upsecond/icon_play1.png') no-repeat 0 0;
    background-size: 62px;
    cursor: pointer;
}

.txw_about_case{
    width: 100%;
    height: 746px;
    background-color: #F9FDFF;
}
.txw_about_case h4,.txw_about_ce h4,.txw_about_partner h4{
    font-size: 40px;
    line-height: 60px;
    text-align: center;
    padding-top: 38px;
    font-weight: normal;
    color: #333;
    position: relative;
}
.txw_about_case h4 i,.txw_about_ce h4 i,.txw_about_partner h4 i{
    position: absolute;
    left: 50%;
    bottom: -3px;
    width: 88px;
    height: 3px;
    margin-left: -44px;
    background-color: #3F9BE7 ;
}
.txw_about_case .cases{
    display: flex;
    justify-content: space-between;
    padding-top: 56px;
}
.txw_about_case .cases li{
    width: 380px;
    height: 504px;
    background: #fff;
    box-shadow: 5px 5px 10px rgba(182, 182, 182, 0.2);
}
.txw_about_case .cases img{
    width: 380px;
    height: 214px;
}
.txw_about_case .cases h5{
    font-size: 17px;
    line-height: 40px;
    padding: 0 20px;
    padding-top: 20px;
    color: #333;
    text-align: center;
}
.txw_about_case .cases p{
    font-size: 14px;
    color: #666;
    line-height: 28px;
    padding: 0 20px;
    text-align: justify;
}

.txw_about_ce{
    width: 100%;
    height: 620px;
    background-color: #fff;
}
.swiper-ybdemo {
    position: relative;
    width: 1000px;
    margin: 0 auto;
    padding-top: 56px;
  }
  
  .swiper-ybdemo .swiper-container {
    padding-bottom: 60px;
  }
  
  .swiper-ybdemo .swiper-slide {
    width: 392px;
    height: 262px;
    background: #fff;
    box-shadow: 0 8px 30px #ddd;
  }
  
  .swiper-container {
    overflow: visible;
  }
  
  .swiper-ybdemo .swiper-slide img {
    display: block;
    width: 100%;
    height: 100%;
  }
  
  .swiper-ybdemo .swiper-slide p {
    line-height: 98px;
    padding-top: 0;
    text-align: center;
    color: #636363;
    font-size: 1.1em;
    margin: 0;
  }
  
  .swiper-ybdemo .swiper-about-button {
    position: absolute;
    bottom: -46px;
    width: 520px;
    height: 40px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 14px;
    z-index: 999;
  }
  
  .swiper-ybdemo .swiper-about-button .swiper-about-des {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 20px;
    /* font-family: Microsoft YaHei-Bold, Microsoft YaHei; */
    font-weight: bold;
    color: #333333;
  }
  
  .swiper-ybdemo .swiper-button-prev,
  .swiper-ybdemo .swiper-button-next {
    width: 40px;
    height: 40px;
  }

.txw_about_partner{
    width: 100%;
    height: 620px;
    background: url('../../images/upsecond/img-bg-hzhb.png') no-repeat center;
    background-size: cover;
}

.yb_about_coo_list {
    width: 1200px;
    height: 360px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-content: space-between;
    padding-top: 40px;
}
  
.yb_about_coo_list li {
    /* width: 320px;
    height: 120px; */
    width: 244px;
    height: 88px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}
  
.yb_about_coo_list li img {
    position: absolute;
    width: 80%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.yb_about_coo_list li .cooimg{
    width: 60%;
}

.yb_modal_warp {
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1000001;
  background-color: rgba(55, 55, 55, .6);
  /* display: none; */
}
.yb_modal_wrap_video {
  display: none;
}
.yb_modal_wrap_video .modal_wrap_video {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  width: 860px;
  padding: 10px;
  box-sizing: content-box;
  background: #fff;
  text-align: center;
  border-radius: 8px;
}
#video{
  object-fit:fill;
}
#video:focus {
  outline: none
}

.yb_modal_wrap_video .modal_wrap_video span{
  position: absolute;
  top: 0;
  right: 0;
  transform: translate(30%,-30%);
  cursor: pointer;
  width: 30px;
  height: 30px;
  background-image: url('https://cdn.chinabidding.cn/public/yuanbo/images/icon_tanchuang.png');
}