body, html {

    margin: 0;
    padding: 0;
    border: none;
    font-size: 20px;
    /*overflow: hidden;*/
    background-color: #fff;
    line-height: 1.6;
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
    color: #4d4d4d;
    width: 750px;
    overflow-x: hidden
}

* {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

i {
    font-style: normal
}

a {
    text-decoration: none;
    color: #6c6c6c
}

.yellow {
    color: #ffc738
}

.btn {
    border-radius: 3px;
    text-align: center;
    display: block;
    padding: 12px 0
}

.topbar {
    position: fixed;
    z-index: 50;
    font-size: 18px;
    color: #fff;
    width: 100%;
    height: 120px;
    border-bottom: 1px solid #e4eaec;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    background-position: 50%;
    background-repeat: no-repeat;
    background-size: auto 50px;
    background-color: #fff;
}

.topbar a {
    display: block;
    width: 100%;
    height: 100%;
}

.topbar .logo {
    font-size: 12px;
    text-align: center;
    color: #6c6c6c;
    /*width: 160px;*/
    height: 100%;
    background: url(../images/logo.png) no-repeat 40px 0;
    background-size: 240px;
    width: 500px;
    float: left;
    text-indent: -999em;
}

.topbar .top_icon {
    width: 80px;
    height: 100%;
    background-repeat: no-repeat;
    background-position: center 30px;
    background-size: 60px auto;
    float: right;
}

.topbar .top_phone {
    background-image: url(../images/phone.jpg)
}

.topbar .top_map {
    background-image: url(../images/ico_map.jpg)
}

.topbar .top_more {
    background-image: url(../images/ico_more.jpg)
}

.topbar .top_forward {
    background-image: url(../images/ico_forward.jpg)
}

ul, li {
    list-style: none
}

.nav-bar {
    padding: 30px;
    background: #fff;
    width: 100%;
    z-index: 9999;
    box-sizing: border-box;
    overflow: auto;
    border-top: 1px solid #e4eaec;

}

.nav-bar .main_nav {
    color: #000
}

.nav-bar .main_nav .menu_head {
    border-bottom: 1px solid #4f4f4f;
    margin-top: 20px;
    background: url("../images/ico-fick.png") no-repeat right;
}

.nav-bar .main_nav .menu_head.down {
    background: url("../images/ico-fick-down.png") no-repeat right;
}

.nav-bar .main_nav .menu_head:first-child {
    background-image: none
}

.nav-bar .main_nav .menu_head a {
    display: block;
    padding-left: 20px;
    font-size: 26px;
    color: #000;
    font-weight: bold;
    line-height: 60px;
}

.nav-bar .main_nav .menu_body {
    display: none
}

.nav-bar .main_nav .menu_body li {
    border-bottom: 1px solid #4f4f4f;
    line-height: 50px;
    margin: 10px 0;
    padding: 10px 0
}

.nav-bar .main_nav .menu_body li a {
    color: #000;
    display: block;
    padding-left: 20px;
    font-size: 30px;
}

.close-menu {
    width: 45px;
    height: 45px;
    position: absolute;
    right: 25px;
    top: 150px;
    background: url("../images/ico-close.png") no-repeat;
    background-size: 100% auto
}

.font-weight-300 {
    font-weight: 300 !important;
}

.go_top {
    position: fixed;
    right: 40px;
    bottom: 80px;
    width: 60px;
    height: 60px;
    background: url("../images/ico_top.png") no-repeat center;
    background-size: 60px;
}

.page-box {
    padding-top: 120px;
    font-family: PingFang SC, Microsoft YaHei, Helvetica Neue, Helvetica, Arial, sans-serif;
    font-weight: 400;
}

.footer_met {
    padding: 50px 0;
    text-align: center
}

.footer_met .mobile {
    font-size: 40px
}

.footer_met .min_des {
    font-size: 14px
}

.footer {
    background-color: #171717;
    padding: 60px 30px;
    color: #fff;
    margin-top: 60px;
}

.footer h3 {
    color: #fcc000;
    padding: 10px 0;
    margin-bottom: 20px;
    border-bottom: 1px solid #fff;
    font-size: 26px
}

.footer .text {
    font-size: 14px
}

.footer .text a {
    color: #fff
}

.footer .power {
    font-size: 12px;
    text-align: center
}

.banner-img {
    width: 100%
}

.position_nav {
    padding: 0 80px;
    background: url("../images/ico_position.jpg") no-repeat 30px 27px;
    line-height: 84px;
    color: #000;
    font-size: 20px;
    border-bottom: 1px solid #e4eaec;
}
.position_nav a{color: #000}

.mt20 {
    margin-top: 20px
}

.mt30 {
    margin-top: 30px
}

.mt50 {
    margin-top: 50px
}

.f60 {
    font-size: 60px
}

.f16 {
    font-size: 16px
}

.clear {
    clear: both
}