.banner {
	width: 100%;
	position: relative;
}

.banner img {
	display: block;
	width: 100%;
}
.crumbs{
   
    background-color: #757575;
    font-size: 20px;
    line-height: 20px;
    padding-left: 10%;
    line-height: 40px;
    color: #ffffff;
}
.crumbs a{
    color: #ffffff;
}
.navs {
    padding-top: 30px;
    text-align: center;
    position: absolute;
    left:50%;
    transform: translate(-50%);
}
.navs li {
    height: 50px;
    float: left;
    width: 160px;
    text-align: center;
    background-color: #fff;
    border: 1px solid #000;
    line-height: 50px;
    font-size: 16px;
    margin:0 20px;
    
}

.navs li a{
    color: #171717;
}
.navs .active{
    background-color: #171717;
}
.navs .active a {
    color: #fff;
}
.news-first {
   padding-top: 50px;
}
.news-first-top>ul {
    margin-top: 120px;
    /* height: 950px; */
}
.news-first-top>ul li {
    position:relative;
    float: left;
    margin-right: 60px;
    width: 360px;
    height: 406px;
    border-bottom: 2px solid #f5f5f5;
}
.news-first-top>ul li:hover {
    border-bottom: 2px solid #000;
}
.news-first-top>ul li:hover .ding {
    color: #000;
}
.news-first-top>ul li:nth-child(3n){
    margin-right: 0;
}

.news-first-top>ul li h3 {
    margin-top: 40px;
    font-weight: 400;
    font-size: 16px;
}

.news-first-top>ul li h4 {
    margin-top: 20px;
    font-weight: 400;font-size:14px;
    color: #d2d2d2;
    line-height: 24px;

}

.news-first-top>ul li .ding {
    position: absolute;
    right: 0;
    bottom: 20px;
    color: #ccc;
    font-weight: 700;
}
.news-first-top>ul li {
    margin-bottom: 50px;
}




.news-first-top .pic img {
    width: 360px;
    height: 220px;
}