* {
    font-family: SourceHanSansCN, sans-serif;
}

/*公共头部导航---结束---*/
body {
    padding-top: 75px;
}

header {
    width: 100%;
    background: #fff;
    height: 75px;
    line-height: 75px;
    box-shadow: 0px 2px 12px 0px rgba(0,0,0,0.07);
    position: fixed;
    top: 0;
    z-index: 999;
}

header .main {
    width: 1200px;
    margin: 0 auto;
}

header .main .left {
    float: left;
}

header .main .left img {
    height: 36px;
}

header .main .right {
    float: right;
}

header .main .right a {
    font-size: 16px;
    color: #000;
    font-weight: 400;
    margin-right: 120px;
}

header .main .right a:hover {
    color: #2050D1;
    font-weight: 500;
}

header .main .right a:last-child {
    margin-right: 0;
}

header .main .right a.active {
    color: #2050D1;
    font-weight: 500;
}
/*公共头部导航---结束---*/

.banner {
    width: 100%;
    min-width: 1200px;
    height: 400px;
    background: url(https://www.f139content.com/website/sci99/images/about/news/banner.png) top center no-repeat;
}

.div_main {
    background: #fff;
    width: 1200px;
    min-height: 500px;
    margin: 0 auto;
    padding: 70px 0 80px 0;
}

.clearfix:after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: " ";
    clear: both;
    height: 0;
}

h2 {
    position: relative;
}

h2 span {
    font: 700 38px / 50px "SourceHanSansCN, sans-serif";
    color: #000;
    position: relative;
    z-index: 99;
}

h2 i {
    font: 600 50px / 60px arial;
    color: #F2F2F2;
    position: absolute;
    left: 0;
    top: -10px;
    z-index: 88;
}

.div_main section {
    margin-bottom: 70px;
}

.div_main section:last-child {
    margin-bottom: 0;
}

/* 列表部分 */
.news_list {
    margin-top: 30px;
}

.news_list dl {
    border-bottom: 1px #dadada solid;
    padding: 25px 0;
}

.news_list dl dt a {
    font: 500 24px / 36px "SourceHanSansSC";
    color: #2050D1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
}

.news_list dl dd:nth-child(2) {
    line-height: 24px;
    font-size: 16px;
    color: #666;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin: 18px 0 22px 0;
}

.news_list dl dd:nth-child(3) {
    line-height: 19px;
    font-size: 16px;
    color: #999;
}