/* 小于750px 手机*/
@media (max-width: 750px) {
  .m_nav_content {
    font-size: 0.14rem;
  }
  .m_nav_content span {
    color: #254a98;
  }
  .m_nav_content .select {
    width: 1.3rem;
  }
  .m_nav_content .select .el-input__inner {
    height: 0.36rem;
    line-height: 0.36rem;
  }
  .main_section_contain {
    width: 100%;
  }
  .main_section_contain .top_content {
    margin-bottom: 0.3rem;
  }
  .main_section_contain .top_content .company_chronicles {
    width: 100%;
    overflow: hidden;
    margin-top: 0.3rem;
    position: relative;
  }
  .main_section_contain .top_content .company_chronicles::before {
    content: "";
    width: 1px;
    height: 100%;
    display: block;
    overflow: hidden;
    background-color: #dedede;
    position: absolute;
    left: 50%;
    top: 0px;
  }
  .main_section_contain .top_content .company_chronicles ul li {
    width: 100%;
    overflow: hidden;
    position: relative;
    margin-top: 0.4rem;
    box-sizing: border-box;
  }
  .main_section_contain .top_content .company_chronicles ul li .year {
    font-size: 0.24rem;
    position: absolute;
    width: 1.6rem;
    left: 50%;
    text-align: center;
    background-color: #fff;
    margin-left: -0.8rem;
    top: 0;
    padding: 0.1rem 0;
    font-weight: bold;
    color: #254a98;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs {
    width: 100%;
    background-color: #f0f0f0;
    float: left;
    position: relative;
    min-height: 1rem;
    font-size: 0.14rem;
    margin-top: 0.5rem;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs::after {
    content: "";
    width: 0.1rem;
    height: 0.26rem;
    display: block;
    overflow: hidden;
    background: url(dsj_07.jpg) center no-repeat;
    position: absolute;
    left: -0.09rem;
    top: 0.1rem;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs .MonthInformation {
    width: 100%;
    overflow: hidden;
    box-sizing: border-box;
    margin-top: 0.2rem;
    padding: 0 0.2rem;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs .MonthInformation dl {
    width: 100%;
    overflow: hidden;
    margin: 0px;
    padding: 0px;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs .MonthInformation dl dd {
    width: 100%;
    overflow: hidden;
    margin: 0px;
    padding: 0px;
    position: relative;
    box-sizing: border-box;
    padding-left: 0.5rem;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs .MonthInformation dl dd .month {
    position: absolute;
    left: 0px;
    top: 0px;
    color: #b2b2b2;
    line-height: 1.5;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs .MonthInformation dl dd .month_text {
    width: 100%;
    overflow: hidden;
    color: #222;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs .MonthInformation dl dd .month_text p {
    width: 100%;
    overflow: hidden;
    line-height: 1.5;
    margin-bottom: 0.1rem;
    text-align: justify;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs .view_more {
    box-sizing: border-box;
    margin-top: 0.1rem;
    margin-bottom: 0.1rem;
    margin-left: 0.7rem;
    cursor: pointer;
    z-index: 100;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs .view_more a {
    display: inline-block;
    color: #000;
    background: url(in_02_on.png) right center no-repeat;
    background-size: 0.2rem;
    padding-right: 0.3rem;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs:hover {
    background-color: #254a98;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs:hover::before {
    display: block;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs:hover::after {
    display: none;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs:hover .MonthInformation dl dd .month {
    color: #fff;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs:hover .MonthInformation dl dd .month_text {
    color: #fff;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs:hover .view_more a {
    color: #fff;
    background: url(in_02_on1.png) right center no-repeat;
    background-size: 0.28rem;
    padding-right: 0.4rem;
  }
  .main_section_contain .top_content .company_chronicles ul li .Memoirs::before {
    content: "";
    width: 0.4rem;
    height: 0.4rem;
    overflow: hidden;
    background: url(dsj_05.jpg) center no-repeat;
    position: absolute;
    display: none;
    left: 0;
    top: 0;
  }
  .main_section_contain .top_content .company_chronicles ul li:nth-child(2n) .Memoirs {
    float: left;
  }
  .main_section_contain .top_content .company_chronicles ul li:nth-child(2n) .Memoirs::after {
    left: initial;
    right: -0.1rem;
    background: url(dsj_06.jpg) center no-repeat;
    background-size: 100%;
  }
  .main_section_contain .top_content .company_chronicles ul li:nth-child(1) {
    margin-top: 0px;
    display: block;
  }
  .main_section_contain .top_content .company_chronicles.on ul li {
    display: block;
  }
  .main_section_contain .top_content .add_more {
    width: 100%;
    text-align: center;
    margin-top: 0.4rem;
  }
  .main_section_contain .top_content .add_more a {
    display: block;
    background-color: #254a98;
    border: 1px solid #254a98;
    border-radius: 50%;
    margin: 0px auto;
    padding: 0px;
    position: relative;
    width: 0.4rem;
    height: 0.4rem;
  }
  .main_section_contain .top_content .add_more a::before {
    content: "";
    width: 100%;
    height: 100%;
    display: block;
    overflow: hidden;
    position: absolute;
    left: 0px;
    top: 0px;
    background: url(dsj_08.png) center no-repeat;
    background-size: 0.2rem;
  }
  .main_section_contain .top_content .add_more a:hover {
    background-color: #fff;
  }
  .main_section_contain .top_content .add_more a:hover::before {
    background: url(dsj_09.png) center no-repeat;
    background-size: 0.2rem;
  }
  .main_section_contain .top_content .add_more a.end {
    display: none;
  }
  .main_contain .left_menu {
    display: none;
  }
  .main_contain .m_common_left_menu_swiper {
    width: 100%;
    overflow: hidden;
    height: 0.36rem;
    line-height: 0.36rem;
    display: block;
    font-size: 0.15rem;
    margin-top: 0.2rem;
    margin-bottom: 0.3rem;
  }
  .main_contain .m_common_left_menu_swiper .swiper-slide {
    width: auto;
  }
  .main_contain .m_common_left_menu_swiper .swiper-slide a {
    display: inline-block;
    padding: 0 0.2rem;
    color: #000;
  }
  .main_contain .m_common_left_menu_swiper .swiper-slide a.on {
    color: #254a98;
  }
  .el-select-dropdown__item.selected {
    color: #254a98;
    font-weight: 700;
  }
  .el-range-editor.is-active,
  .el-range-editor.is-active:hover,
  .el-select .el-input.is-focus .el-input__inner {
    border-color: #254a98;
  }
  .el-select .el-input__inner:focus {
    border-color: #254a98;
  }
}
@media (min-width: 750px) {
  /*  PC */
  .main_contain {
    position: relative;
    overflow: hidden;
  }
  .main_contain .left_menu ul li {
    overflow: hidden;
    line-height: 1.5;
    margin-bottom: 20px;
    font-size: 20px;
    width: 150px;
  }
  .main_contain .left_menu ul li a {
    color: #000;
  }
  .main_contain .left_menu ul li a:hover {
    color: #254a98;
  }
  .main_contain .left_menu ul li.on a {
    color: #254a98;
  }
  .main_contain .m_common_left_menu_swiper {
    display: none;
  }
  .main_contain .main_section_contain {
    width: 100%;
    border-top: 1px solid #e5e5e5;
    font-size: 18px;
  }
  .main_contain .main_section_contain .main_sub_box {
    display: flex;
  }
  .main_contain .main_section_contain .main_sub_box .top_content {
    margin-bottom: 100px;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles {
    width: 100%;
    overflow: hidden;
    margin-top: 100px;
    position: relative;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles::before {
    content: "";
    width: 1px;
    height: 100%;
    display: block;
    overflow: hidden;
    background-color: #dedede;
    position: absolute;
    left: 50%;
    top: 0px;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li {
    width: 100%;
    overflow: hidden;
    position: relative;
    margin-top: -80px;
    box-sizing: border-box;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .year {
    font-size: 46px;
    position: absolute;
    width: 160px;
    left: 50%;
    text-align: center;
    background-color: #fff;
    margin-left: -80px;
    top: 0;
    padding: 10px 0;
    font-weight: bold;
    color: #254a98;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs {
    width: calc(50% - 90px);
    background-color: #f0f0f0;
    float: right;
    position: relative;
    min-height: 200px;
    padding: 30px;
    font-size: 18px;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs::after {
    content: "";
    width: 13px;
    height: 26px;
    display: block;
    overflow: hidden;
    background: url(dsj_07.jpg) center no-repeat;
    background-size: 100%;
    position: absolute;
    left: -10px;
    top: 10px;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs .MonthInformation {
    width: 100%;
    overflow: hidden;
    box-sizing: border-box;
    margin-top: 20px;
    padding: 0 20px;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs .MonthInformation dl {
    width: 100%;
    overflow: hidden;
    margin: 0px;
    padding: 0px;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs .MonthInformation dl dd {
    width: 100%;
    overflow: hidden;
    margin: 0px;
    padding: 0px;
    position: relative;
    box-sizing: border-box;
    padding-left: 60px;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs .MonthInformation dl dd .month {
    position: absolute;
    left: 0px;
    top: 0px;
    color: #b2b2b2;
    line-height: 1.5;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs .MonthInformation dl dd .month_text {
    width: 100%;
    overflow: hidden;
    color: #222;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs .MonthInformation dl dd .month_text p {
    width: 100%;
    overflow: hidden;
    line-height: 1.5;
    margin-bottom: 10px;
    text-align: justify;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs .view_more {
    box-sizing: border-box;
    margin-top: 20px;
    margin-bottom: 50px;
    margin-left: 80px;
    cursor: pointer;
    z-index: 100;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs .view_more a {
    display: inline-block;
    color: #000;
    background: url(in_02_on.png) right center no-repeat;
    background-size: 28px;
    padding-right: 40px;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs:hover {
    background-color: #254a98;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs:hover::before {
    display: block;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs:hover::after {
    display: none;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs:hover .MonthInformation dl dd .month {
    color: #fff;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs:hover .MonthInformation dl dd .month_text {
    color: #fff;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs:hover .view_more a {
    color: #fff;
    background: url(in_02_on1.png) right center no-repeat;
    background-size: 28px;
    padding-right: 40px;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li .Memoirs::before {
    content: "";
    width: 40px;
    height: 40px;
    overflow: hidden;
    background: url(dsj_05.jpg) center no-repeat;
    position: absolute;
    display: none;
    left: 0;
    top: 0;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li:nth-child(2n) .Memoirs {
    float: left;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li:nth-child(2n) .Memoirs::after {
    left: initial;
    right: -10px;
    background: url(dsj_06.jpg) center no-repeat;
    background-size: 100%;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li:nth-child(1) {
    margin-top: 0px;
    display: block;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles ul li:nth-child(1) .year {
    padding-top: 0px;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .company_chronicles.on ul li {
    display: block;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .add_more {
    width: 100%;
    text-align: center;
    margin-top: 40px;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .add_more a {
    display: block;
    background-color: #254a98;
    border: 1px solid #254a98;
    border-radius: 50%;
    margin: 0px auto;
    padding: 0px;
    position: relative;
    width: 80px;
    height: 80px;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .add_more a::before {
    content: "";
    width: 100%;
    height: 100%;
    display: block;
    overflow: hidden;
    position: absolute;
    left: 0px;
    top: 0px;
    background: url(dsj_08.png) center no-repeat;
    background-size: 40px;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .add_more a:hover {
    background-color: #fff;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .add_more a:hover::before {
    background: url(dsj_09.png) center no-repeat;
    background-size: 40px;
  }
  .main_contain .main_section_contain .main_sub_box .top_content .add_more a.end {
    display: none;
  }
}