body,html{
    font-family: "Microsoft Yahei";
    font-size: 12px;
    padding: 0;
    margin: 0;
    background: #fff;
    overflow-x: hidden;
}

a{
    text-decoration: none;
}

ul,li,p{
    padding: 0;
    margin: 0;
    list-style: none;
}

img{
    border: none;
    padding: 0;
    margin: 0;
}

.width{
    width: 1270px;
    margin: 0 auto;
}

/*头部*/
.nav{
    height: 110px;
    margin: 0 auto;
    clear: both;
}

.nav_left{
    float: left;
    padding-top: 25px;
    clear: both;
}

.logo{
    width: 224px;
    height: 60px;
    display: block;
    background: url(../images/public/logo3.png) center center no-repeat;
    float: left;
}

.logo_line{
    width: 1px;
    height: 42px;
    background: url(../images/public/logo_line.png) center center no-repeat;
    float: left;
    display: block;
    margin: 12px 18px 0 18px;
}

.logo_text{
    width: 180px;
    height: 45px;
    background: url(../images/public/logo_text.png) center center no-repeat;
    display: block;
    float: left;
    margin-top: 10px;
}

.nav_right{
    padding-left: 128px;
    float: left;
}

.nav_ul{
    clear: both;
    height: 110px;
}

.nav_ul .nav_li{
    width: 140px;
    height: 110px;
    float: left;
    position: relative;
}

.nav_ul .nav_li .link{
    width: 140px;
    height: 110px;
    display: block;
    background-position: center center;
    background-repeat: no-repeat;
}

.nav_ul .nav_li.aboutus .link{
    background-image: url(../images/public/about.png); 
}
.nav_ul .nav_li.aboutus.current .link{
    background-image: url(../images/public/about_file.png); 
}

.nav_ul .nav_li.products .link{
    background-image: url(../images/public/products.png); 
}
.nav_ul .nav_li.products.current .link{
    background-image: url(../images/public/products_file.png); 
}

.nav_ul .nav_li.gongchengsanguo .link{
    background-image: url(../images/public/gongchengsanguo.png); 
}
.nav_ul .nav_li.gongchengsanguo.current .link{
    background-image: url(../images/public/gongchengsanguo_file.png); 
}
.nav_ul .nav_li.gongchengtianxia .link{
    background-image: url(../images/public/gongchengtianxia.png); 
}
.nav_ul .nav_li.gongchengtianxia.current .link{
    background-image: url(../images/public/gongchengtianxia_file.png); 
}

.nav_ul .nav_li.joinus .link{
    background-image: url(../images/public/joinus.png); 
}
.nav_ul .nav_li.joinus.current .link{
    background-image: url(../images/public/joinus_file.png); 
}

.nav_ul .nav_li.contact .link{
    background-image: url(../images/public/contact.png); 
}
.nav_ul .nav_li.contact.current .link{
    background-image: url(../images/public/contact_file.png); 
}

.nav_menu{
    display: none;
    width: 140px;
    background: rgba(0,0,0,0.6);
    position: absolute;
    top: 110px;
    left: 0;
    z-index: 101;
}

.nav_menu a{
    width: 100%;
    height: 55px;
    display: block;
    text-align: center;
    line-height: 55px;
    color: #fff;
    font-size: 16px;
    position: relative;
}

.nav_menu a i{
    width: 8px;
    height: 8px;
    background: url(../images/public/dot.png) center center no-repeat;
    display: none;
    position: absolute;
    top: 23.5px;
    left: 20px;
}

.nav_menu a:hover{
    color: #37b0e9;
}

.nav_menu a:hover i{
    display: inline-block;;
}

.nav_li:hover .nav_menu{
    display: block;
}

/*底部*/
.footer{
    height: 400px;
    background: #1f1f1f;
    padding-top: 34px;
}

.footer_logo{
    width: 175px;
    height: 54px;
    background: url(../images/public/logo1.png) center center no-repeat;
    display: block;
    margin: 0 auto;
}
.footer_hezuo{
    width: 1333px;
    height: 161px;
    background: url(../images/public/hezuo.png) center center no-repeat;
    display: block;
    margin: 0 auto;
}

.footer p{
    width: 100%;
    color: #929191;
    font-size: 12px;
    line-height: 25px;
    text-align: center;
}

.footer p.write{
    color: #fbfbfb;
    padding-top: 20px;
}
.index_center{
    width: 1322px;
    height: 399px;
    background: url(../images/public/index_center.png) center center no-repeat;
    display: block;
    margin: 0 auto;
}
.indexcenter {
    justify-content: center;
    display: flex !important;
}
.indexcentertiaozhuan {
    position: fixed ;
    margin: 15px 1117px 0 0;
    font-size: 33px;
}
/*.index_center2{
    width: 661px;
    height: 399px;
    background: url(../images/public/index_center.png) left left no-repeat;
    display: block;
    margin: 0 0 0 0px;
}*/