@media screen and (min-width: 1920px) {
  .main-index-w, .index-body .main-w,
  .main-w {
    width: 1500px;
  }
  .header .header-nav ul {
    margin-right: 70px;
  }
  .top-list-wrap .index-list li {
    height: 45px;
    line-height: 45px;
  }
  .index-top .index-top-con .index-top-list {
    width: 10px;
    flex: 1;
    min-width: 0;
    box-sizing: border-box;
    overflow-wrap: break-word;
    word-break: break-all;
  }
  .shipping-wrap .shipping-bot li {
    width: 340px;
    height: 450px;
  }
  .shipping-wrap .shipping-bot li a img {
    height: 380px;
  }
  .shipping-wrap .shipping-top .shipping-top-right .shipping-btn-wrap {
    width: 500px;
    margin: 0 auto;
  }
  .shipping-wrap .shipping-top .shipping-top-left {
    width: 656px;
  }
  .shipping-wrap .shipping-top .shipping-top-left p {
    line-height: 40px;
  }
  .course-wrap ul li {
    width: 45%;
  }
  .course-wrap ul li:nth-child(even) {
    margin-left: 536px;
  }
  .culture-wrap .culture-main {
    max-width: 1500px;
  }
  .culture-wrap .culture-main .culture-swiper.main-index-w {
    width: 1250px;
  }
  .contact-con .contact-l {
    width: 696px;
  }
  .img-list2 li {
    width: 375px;
    margin-right: 25px;
  }
  .img-list2 li img {
    width: 100%;
  }
  .news-swiper.swiper-container .swiper-pagination {
    right: 295px;
  }
  .investment-con .investment-r {
    width: 485px;
  }
}

@media screen and (min-width: 1700px) {
  .swiper-con2 .hicon-zuojiantou-yuan {
    left: 4%;
  }
  .swiper-con2 .icon-youjiantou-yuan {
    right: 4%;
  }
}