.public-header{
    height: 125px;
    background:url("../images/header-bg.png");
}
.public-header .header-logo{
    float: left;
    margin-top: 35px;
    margin-left: 340px;
    width: 359px;
    height: 68px;
    background:url("../images/header-logo.png") no-repeat;
}
.public-header .header-logo-90{
    float: left;
    margin-top: 35px;
    margin-left: 340px;
    width: 79px;
    height: 67px;
    background:url("../images/header-logo-90.png");
}
.public-header .header-logo-cn{
    float: left;
    margin-top: 35px;
    margin-left: 18px;
    width: 266px;
    height: 68px;
    background:url("../images/header-logo-cn.png");
}
.public-header .header-nav{
    float: right;
    margin-right: 318px;
    font-size: 18px;
    font-size: 1.125rem;
    font-family: 微软雅黑;
}
.public-header .header-nav .item{
    float: left;
    margin-top: 80px;
    margin-left: 50px;
    display: block;
}
.public-header .header-nav a{
    position: relative;
    text-decoration: none;
    color: #fff;
    display: block;
}
.public-header .header-nav .nav-underline:before {
    content: "";
    position: absolute;
    bottom: -5px;
    width: 0;
    border-bottom: 4px solid #fff;

}
.public-header .header-nav .nav-underline:hover:before {
    width: 100%;
}
.public-header .header-nav .nav-underline:before {
    -webkit-transition: width 0.5s ease-in-out;
    -moz-transition: width 0.5s ease-in-out;
    -ms-transition: width 0.5s ease-in-out;
    -o-transition: width 0.5s ease-in-out;
    transition: width 0.5s ease-in-out;
}
.public-header .header-nav .nav-underline-active,
.public-header .header-nav .nav-underline-active:hover {
    border-bottom: 4px solid #fff;
    text-align: center;
}
.public-container{
    position: relative;
    margin: 0 auto;
    width: 1857px;
}
@media screen and (max-width: 1857px) {
    .public-container {
        width: 95%;
    }
    .public-header .header-logo{
        margin-top: 35px;
        margin-left: 5%;
        background:url("../images/header-logo.png") no-repeat;
    }
    .public-header .header-nav{
        width: 60%;
        margin-right: 4%;
    }
    .public-header .header-nav .item{
        margin-left: 5%;
    }
}
.public-footer{
    height: 220px;
    background: #414141;
}
.public-footer .footer-col{
    float:left;
    margin-top: 53px;
    margin-left: 350px;
    width: 244px;
    font-size: 14px;
    font-family: 宋体;
    color: #fff;
    line-height: 2.0;
}
.public-footer .footer-QRCode{
    float:left;
    margin-top: 48px;
    width: 93px;
    height: 93px;
    background: url("../images/footer-QRCode.png");
}
.public-footer .footer-copyright{
    float:left;
    margin-top: 53px;
    margin-left: 30px;
    font-family: 宋体;
    font-size: 15px;
    color: #fff;
    line-height:1.8;
}
@media screen and (max-width: 1857px) {
    .public-footer .footer-col{
        width: 12%;
    }
}