html, body, input, p, a, span, ul, li, dl, dt, dd, ol, select, td, th, input, textarea, button, div {font-family: "HELVETI1ca Neue","Microsoft Yahei","微软雅黑","Tohoma";}
body { min-width: 1200px;border: 0;margin: 0;padding: 0;overflow-x: hidden;}
h1,h2,h3,h4,h5,h6 {margin:0;padding: 0; font-weight: normal;}
ul,ol,li,p,dl,dt,dd,input {margin:0;padding: 0;}
ul,ol,li { text-decoration: none;list-style: none;}
a {color: #666;text-decoration: none;}
img {max-width: 100%;  margin: 0 auto;padding:0;border: none;}
input, textarea, button, select{outline: 0; border: 0;}

.logo{
    width: 100%;
    height: 100px;
    background-size: 100%;
    background-color: #333;
}
.logo .logo-r{
    float: left;
    width: 320px;
    height: 100%;
    margin-left: 18%;
}
.logo .logo-l{
    float: right;
    width: 350px;
    height: 100%;
    margin-right: 18%;
}
.logo .logo-l img{
    width: 160px;
    float: left;
}
.logo .logo-l .h1{

 }
.logo .logo-l .h1 span{
    color: white;
    display: block;
    padding-top: 17px;
}
.naviga{
    width: 100%;
    height: 50px;
    background-color: #666;
}
.natina{
    width: 1200px;
    margin-left: 17%;
    display: flex;
    align-items: center;
    padding-top: 12px;
}
.natina div{
    width: 170px;
    height: 100%;
}

.nav-one{
    position: relative;
}
.nav-one:hover .nav-one-o{
    display: block;
}
.nav-one-o:hover{
    display: block;
}
.nav-one-o{
    position: absolute;
    display: none;
    top: 25px;
    left: 3px;
}
.nav-one-o ul{
    width: 170px;
    height: 220px;
    background-color: #666;
    color: white;
    display: flex;
    flex-direction: column;
}
.nav-one-o ul li{
    margin-top: 10px;
}
.nav-two{
    position: relative;
}
.nav-two:hover .nav-two-w{
    display: block;
}
.nav-two-w:hover{
    display: block;
}
.nav-two-w{
    position: absolute;
    display: none;
    top: 25px;
    left: 3px;
}
.nav-two-w ul{
    width: 170px;
    height: 220px;
    background-color: #666;
    color: white;
    display: flex;
    flex-direction: column;
}
.nav-two-w ul li{
    margin-top: 10px;
}
.nav-fore{
    position: relative;
}
.nav-fore:hover .nav-fore-f{
    display: block;
}
.nav-fore-f:hover{
    display: block;
}
.nav-fore-f{
    position: absolute;
    display: none;
    top: 25px;
    left: 3px;
}
.nav-fore-f ul{
    width: 170px;
    height: 220px;
    background-color: #666;
    color: white;
    display: flex;
    flex-direction: column;
    padding-bottom: 10px;
}
.nav-fore-f ul li{
    margin-top: 10px;
}
.natina div a{
    display: flex;
    font-size: 20px;
    font-weight: 500;
    color: white;
    justify-content: center;
}
.banner{
     width: 100%;
    display: flex;
    height: 700px;
 }
.banner img{
    width: 100%;
}