.header {
    position: fixed;
    top: 0;
    width: 100%;
    height: 160px;
    z-index: 10;
}

.w1440 {
    width: 1440px;
    margin: 0 auto;
}

.w1220 {
    width: 1220px;
    margin: 0 auto;
}

#div_main{
    margin-top:140px;

}
.header .content {
    position: relative;
}

.flex {
    display: flex;
    align-items: center;
}

.flex-sb {
    justify-content: space-between;
}

.header .logo {
    height: 80px;
    background: #fff;
}

.header .nav {
    height: 60px;

    background: #52b788;
}

.other {
    position: relative;
    flex: 1;
    justify-content: flex-end;
}

.other .line {
    height: 30px;
    width: 1px;
    background: #52b788;
    margin: 0 20px;
}

.wx-code {
    position: absolute;
    top: 28px;
    right: 246px;
    display: none;
}

.cx-code {
    position: absolute;
    top: 28px;
    right: 62px;
    display: none;
}

.wx:hover .wx-code {
    display: block;
}

/*  */
.nav-box{
    /*display: flex;*/
}
.nav-box .item{
    width: 130px;
    height: 60px;
    text-align: center;
    line-height: 60px;
    font-size: 20px;
    background: #52b788;
    color: #fff;
    cursor:pointer;
    float: left;
}
.nav-box .active{
    color: #52b788 !important;
    background: #fff;
}
/* footer */
.footer{
    position: relative;
    width: 100%;
    height: 650px;
    background-image: url(../image/bottom-bg.png) ;
    background-size: 100% 100%;
    background-repeat: no-repeat;
}
.footer .box{
    margin-top: 80px;
    color: #fff;
    width: 255px;
    text-align: left;
    height: 460px;
}
.footer .box .title{
    font-size: 30px;
    line-height: 55px;
    margin-bottom: 10px;
}
.footer .box li{
    color: #fff;
    font-size: 23px;
    line-height: 45px;
}

.footer .box li a {
    color: #fff;
    font-size: 23px;
}