.nav{
    overflow:hidden;
    width: 1920px; 
    height:80px ;
    background-color: rgb(16,119,136);
}

.header{
    overflow: visible;
    margin:0 auto;
    text-align: center;
    width: 58.3vw;
    height:80px ;
    background-color: rgb(16,119,136);
}
.i1{
    margin-top: 13px;
    float: left;
    /* width: 147.28px; */
    height: 58.3px;
    
}
.header ul{
    /* margin-left: 350px; */
    padding: 0;
    width: 600px;
    float: right;
}
.header>ul>li{
            margin-left: 50px;
            width: 100px;
            /* padding-left: 50px; */
            float: left;
            height: 50px;
            text-align: center;
}
.header>ul>li>a{
            font-size: 18px;
            
            color: rgb(235,245,247);
            line-height: 55px;
            /* border-bottom: 2px solid #f0301e; */
            display: block;
            text-decoration: none;
}
.header>ul>li:hover>a{
    border-bottom: 6px solid #FFFFFF;
}
.main{
    width: 1920px;
    height: 720px;
    background-image: url(../img2/bg-2.jpg);
    display: block;
            /* width: 100%; */
}
.content{
    width: 1920px;
    height: 1430px;
}
.content >h3{
    font-weight: normal;
    text-align: center;
    font-size:44px ;
    margin-top: 195px;
    text-align: center;
}
.d1{
    text-align: center;
}
.d1>div{ 
    margin-top: 175px;
    margin-right: 43px;
    width: 266px;
    height: 266px;
    background: rgb(193,193,193);
    /* background-image: url(../img/dainhua2.png); */
    display:inline-block
}
.d1>.d3{
    cursor:pointer;
    background-image: url(http://www.ylcp.shop/files/files/1651635739543/img2/dizhi\ \(2\).png);
    background-repeat:no-repeat;
    background-position: 50% 50%;
}
.d1>.d4{
    cursor:pointer;
    background-image: url(../img2/dainhua2.png);
    background-repeat:no-repeat;
    background-position: 50% 50%;
}
.d1>.d5{
    cursor:pointer;
    background-image: url(../img2/chuanzji.png);
    background-repeat:no-repeat;
    background-position: 50% 50%;
}
.d1>.d6{
    cursor:pointer;
    background-image: url(http://www.ylcp.shop/files/files/1651635739543/img2/youjian\ \(2\).png);
    background-repeat:no-repeat;
    background-position: 50% 50%;
}
.d1>.d3,.d4,.d5,.d6{
    font-size: 25px;
    color: #ffffff;
    
}
.d1>.d3:hover{
    transition-duration:1s;
    background-color: #9b9999;
}
.d1>.d4:hover{
    transition-duration:1s;
    background-color: #9b9999;
}
.d1>.d5:hover{
    transition-duration:1s;
    background-color: #9b9999;
}
.d1>.d6:hover{
    transition-duration:1s;
    background-color: #9b9999;
}
.d1>.d3>span{
    position: relative;
    top: 190px;
}
.d1>.d4>span{
    position: relative;
    top: 190px;
}
.d1>.d5>span{
    position: relative;
    top: 190px;
}
.d1>.d6>span{
    position: relative;
    top: 190px;
}
.d2{
    text-align: center;
    margin-bottom: 30px;
}
.d2>img{
    width: 70px;
    height: 80px;
    /* text-align: center; */
    /* margin-right:304px ; */
    /* margin-left: 20px; */
    margin-top: 200px;
}
.i2,.i3{
    margin-right: 250px;
}
.i2,.i3,.i4{
    font-size: 26px;
    position: relative;
    bottom: 30px;
    right: -10px;
}
.content>.s1{
    font-size: 15px;
    position: relative;
    left: 477px;
}
.content>.s2{
    font-size: 15px;
    position: relative;
    left: 730px;
}
.content>.s3{
    font-size: 15px;
    position: relative;
    left: 1067px;
}
.d7{
    text-align: center;
    width: 1920px;
    height: 550px;
}
.d7>iframe{
    margin: 0;
    padding: 0;
    /* margin-top: 90px; */
    text-align: center;
    /* width: 1680px; */
    /* height: 32px; */
    position: relative;
    left: 0px;
}
.box5{
    /* text-align: center; */
    /* margin-top: 48px; */
    /* text-align: center; */
    width: 1920px;
    height: 300px;
    background-color: #333333;
}
.box5>hr{
    width: 1034px;
    height: 1px;
    background-color: #FFFFFF;
    border: 1px solid #999999;
    /* border-top: 1px solid #999999; */
    position: relative;
    top: 60px;
}
.box5>.s6{
    text-align: center;
    display: inline-block;
    width: 146px;
    height: 25px;
    background-color: #333333;
    font-size: 22px;
    color: #FFFFFF;
    position: relative;
    top: 34px;
    left: 880px;
}
.box5>.d13{
    text-align: center;
    color:rgb(250,244,244) ;
    position: relative;
    top: 50px;
}
.box5>.d13>.s8{
    margin-right: 250px;
    margin-left: 250px;
}
.box5>.d13>.s7,.s8,.s9{
    font-size: 15px;
}
.box5>.box6{
    display: inline-block;
}

.box6>p{
    font-size: 19px;
    color: #EEEEEE;
    position: relative;
    top: 55px;
    line-height: 45px;
    left: 550px;
}
.box5>.box6>.b1>.g1{
    width: 150px;
    height: 65px;
    /* display: inline-block; */
    position: relative;
    bottom: 40px;
    left: 1250px;
}
.box5>.box6>.b1>.g2{
    width: 55px;
    height: 60px;
    position: relative;
    left: 1290px;
    bottom: 30px;
}