html,body,*{
    margin: 0;
    padding: 0;
    font-family:Microsoft YaHei;
}
.b-contents{
    min-width: 1200px;
}
.contents{
    min-width: 1200px;
    width: 1200px;
    margin: 0 auto;
}
.top-nav{
    width: 100%
}
.nav{
    height: 128px;
    display: flex;
    justify-content:space-between;
}
.nav .logo{
    line-height: 128px;
}
.nav .logo img{
    margin-top: 18px;
    height: 88px;
}
.navs ul{
    margin-top: 44px;
}
.navs,
.navs ul{
    width: 560px;
    display: flex;
    justify-content:space-between;
    list-style: none;
}
.navs ul li{
    display: block;
    height: 44px;
    font-size:20px;
    font-weight:300;
    color:rgba(31,72,124,1);
    line-height: 40px;
    text-align: center;
}
.navs ul li.active{
    font-size:20px;
    font-weight:bold;
    color:rgba(31,72,124,1);
}
.navs ul li.active:after{
    content: "";
    text-align: center;
    margin: 0 auto;
    display: block;
    width:28px;
    height:4px;
    background:rgba(31,72,124,1);
    border-radius:2px;
}
.footer a,
.footer{
    color:#fff;
}
.footer-info{
    display: flex;
    justify-content:space-between;
    padding-top: 40px;
}
.footer hr{
    background:rgba(2,10,21,1);
}
.footer-address-title{
    font-size:26px;
    color:rgba(255,255,255,1);
    font-weight:400;
}
.footer-address-desc{
    margin-top: 25px;
    font-size:18px;
}
.copyright{
    padding-top: 2px;
    padding-bottom: 16px;
}
.footer-serve{
    width: 300px;
    display: flex;
    justify-content:space-between;
}
.serve-item .footer-address-title{
    font-size:24px;
}
.banner
.banner img{
    width: 100%;
    height: 510px;
}
.index-content{
    background:rgba(255,255,255,1);
    box-shadow:-3px 25px 59px 7px rgba(183,192,201,0.23);
    border-radius:10px;
    min-height: 200px;
    padding: 20px;
}
.about-content{
    min-height: 200px;
    padding: 20px;
}
.index-content-box{
    display: flex;
    justify-content:space-between;
}
.index-content-box .image_left,
.index-content-box .image_left img{
    width: 580px;
    height: 540px;
}
.index-content-box .html_right{
    width: 580px;
}
.negative-contents{
    background: #ffffff;
    min-height: 300px;
    padding: 30px;
    border-radius:26px;
    /*margin-top: -140px;*/
    position: relative;
    top:-140px;
}
.negative-contents .titles{
    text-align: center;
}
.negative-contents .titles h2{
    font-size:24px;
    font-weight:bold;
    color:rgba(51,51,51,1);
}
.negative-contents .titles h3{
    font-size:22px;
    font-weight:400;
    color:rgba(51,51,51,1);
    margin-top: 10px;
}
.negative-contents-info{
    margin-top: 100px;
    display: flex;
    justify-content:space-between;
}
.menu_item_box{
    width:210px;
    border:1px solid rgba(244,244,244,1);
    border-radius:6px 6px 0px 0px;
}
.menu_item_box div{
    width:190px;
    height:68px;
    line-height: 68px;
}
.item-title{
    background:#DBE4EE;
    border-radius:6px 6px 0px 0px;
    font-size:22px;
    color:#333333;
    padding-left: 20px;
    text-align: left;
}
.item-item{
    background:#FFFFFF;
    font-size:20px;
    color: #666666;
    padding-right: 20px;
    text-align: right;
}
.item-item.active{
    background:#EEF2F7;
}
.image-list-box{
    width: 1190px;
    height: 360px;
    margin: 0 auto;
    background-size: 100%;
    border-radius: 10px;
    margin-bottom: 30px;
}
.image-list-box .title{
    height:24px;
    font-size:24px;
    font-weight:bold;
    color:#ffffff;
    line-height:24px;
    padding-top: 306px;
    margin-left: 55px;
}