.swiper-box {
    margin: 20px 0;
    width: 100%;
    max-width: 720px
  }
  .pic_page {
    position: absolute;
    z-index: 100;
    right: 20px;
    bottom: 20px;
    font-size: 18px;
    color: #009483;
    font-weight: bold
  }
  .view {
    position: relative
  }
  .view .swiper-container {
    width: 100%;
    height: 345px
  }
  .view .arrow-left {
    position: absolute;
    left: 0;
    top: 50%;
    margin-top: -25px;
    width: 28px;
    height: 50px;
    background: url('./i/arrow_l.png') no-repeat center;
    background-size: 100%;
    z-index: 10
  }
  .view .arrow-right {
    position: absolute;
    right: 0;
    top: 50%;
    margin-top: -25px;
    width: 28px;
    height: 50px;
    background: url('./i/arrow_r.png') no-repeat center;
    z-index: 10
  }
  .view .swiper-slide div {
    width: 100%;
    height: 100%;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover
  }
  .preview {
    max-width: 720px;
    margin-top: 18px;
    position: relative
  }
  .preview .swiper-container {
    margin-left: 45px;
    margin-right: 45px
  }
  .preview .swiper-slide {
    width: 158px;
    height: 90px;
    cursor: pointer;
    overflow: hidden
  }
  .preview .swiper-slide img {
    width: 145px;
    height: 86px;
    margin: 0 auto;
    border: 2px solid #edeef5
  }
  .preview .arrow-left {
    background-size: 100% 100%;
    position: absolute;
    left: 0px;
    top: 10px;
    margin-top: -9px;
    width: 44px;
    height: 90px;
    background: #353535;
    text-align: center;
    z-index: 10
  }
  .preview .arrow-left span {
    display: inline-block;
    width: 12px;
    height: 18px;
    background: url('./i/arrow_l@1x.png') no-repeat center;
    background-size: 100% 100%;
    /* transform: rotate(180deg); */
    margin-top: 34px
  }
  .preview .arrow-right {
    position: absolute;
    right: 0px;
    top: 10px;
    margin-top: -9px;
    width: 44px;
    height: 90px;
    background: #353535;
    text-align: center;
    z-index: 10
  }
  .preview .arrow-right span {
    display: inline-block;
    width: 12px;
    height: 18px;
    background: url('./i/arrow_r@1x.png') no-repeat center;
    background-size: 100% 100%;
    margin-top: 34px
  }
  .preview .active-nav img {
    padding: 0;
    border-color: #009483;
    opacity: .9
  }