@media screen and (max-width: 680px) and (orientation: portrait) {
  .m_img {
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  .m_menuimg {
    width: 30px;
  }
  .header {
    padding-top: 15px;
  }
  .w {
    width: 90%;
    margin: 0 auto;
  }
  .nav,
  .language,
  .about_us .img,
  .footer .right,
  .news .news_con .news_left {
    display: none;
  }
  .about_us .con .text {
    width: 100%;
  }
  .about_us .button button {
    width: 28%;
  }
  .com_index_title {
    flex-wrap: wrap;
  }
  .main_business .business_list {
    flex-wrap: wrap;
  }
  .main_business .business_list li {
    width: 100%;
  }
  .main_business .business_list li .text img {
    width: 40px;
  }
  .main_business .business_list li .shadow .line {
    height: 0;
  }
  .main_business .business_list li .text h5 {
    margin-left: -48px;
  }
  .main_business {
    margin-bottom: 0;
  }
  .characteristic ul {
    flex-wrap: wrap;
  }
  .characteristic {
    height: auto;
  }
  .characteristic ul li {
    height: 100%;
    border: none;
    width: 100%;
    padding: 10px 0;
  }
  .characteristic .tit {
    position: static;
    margin-left: 0;
    padding: 10px 0;
  }
  .characteristic .tit .en {
    font-size: 35px;
  }
  .characteristic ul li:first-child {
    border: none;
  }
  .sub_loc {
    height: auto;
  }
  .sub_loc ul li {
    width: 50%;
  }
  .sub_loc ul {
    justify-content: left;
    flex-wrap: wrap;
  }
  .content img {
    width: 100%!important;
    display: block;
    height: auto!important;
  }
  .contact.flex_ar {
    flex-wrap: wrap;
  }
  .contact .map,
  .contact .text {
    width: 100%;
  }
  .about_leader .row2,
  .about_leader .row3 {
    width: 100%;
  }
  .about_leader .flex_ar {
    justify-content: center;
    flex-wrap: wrap;
  }
  .about_leader .block {
    margin-top: 55px;
  }
  .hotnews {
    display: none;
  }
  .newscon_list li {
    height: auto;
  }
  .newscon_list li .con .time {
    display: none;
  }
  .newscon_list li .con .text {
    width: 64%;
  }
  .list_con .text p img {
    width: 100% !important;
    height: auto !important;
  }
  #banner {
    height: 400px;
  }
  #banner .swiper-slide {
    text-align: center;
    vertical-align: middle;
  }
  #banner .swiper-slide img {
    width: auto;
    height: 100%;
  }
  .contact .text p i {
    display: none;
  }
  .list_con .events .years_pagination {
    display: none;
  }
  .content table tr {
    display: flex;
    flex-wrap: wrap;
  }
  .content table tr td {
    width: 100%;
    height: auto;
    margin-bottom: 20px;
  }
}