body{
    margin: 0;
}
*{
    margin: 0;
    padding: 0;
}
.nav{
    width: 100%;
    height: 50px;
    background-color: #4293CA;
}
ul{
    width: 75%;
    height: 50px;
    margin: 0 auto;
}

li{
    display: block;
    float: left;
    margin-right: 31px;
    list-style-type: none;
}
.phone{
    margin-top: 17px;
    margin-right: 10px;
    float: right;
}
.telphone{
    color: #FFFFFF;
    margin-top: 14px;
    float: right;
}

#index_li{
    margin-right: 24px;
}
a{
    display: block;
    text-decoration: none;
    text-align: center;
}
span{
    margin: 15px 16px 15px 16px;
    width: 56px;
    height: 20px;
    font-size: 14px;
    font-family: PingFangSC-Medium, PingFang SC;
    font-weight: 500;
    color: #FFFFFF;
    line-height: 50px;
}
#span_one{
    width: 28px;
    height: 20px;
}
a:hover{
    background-color: #FFFFFF;
}
a:hover > span{
    color: #4293CA;
}

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    width: 210px;
    height: 358px;
}
.dropdown-content > a{
    display: block;
    width: 100%;
    height: 50px;
    background: #FFFFFF;
    border-bottom: 1px solid black;
}
#last_span{
    border: none;
}
.dropdown-content a > span{
    margin: 15px 134px 15px 20px;
    width: 56px;
    height: 20px;
    font-size: 14px;
    font-family: PingFangSC;
    color: #4A4A4A;
}
.clickAreaParent {
    position: relative;
    width: 1500px;
    margin: 0 auto;
}
.clickAreaParent > .clickArea {
    background: rgba(0, 0, 0, 0);
    position: absolute;
    width: 110px;
    height: 25px;
    right: 255px;
    bottom: 345px
}
.dropdown-content a:hover > span{
    color: #4293CA;
}
.dropdown:hover .dropdown-content{
    display: block;
}
.active{
    background-color: #FFFFFF;
}
.active_span{
    color: #4293CA;
}
.moren{
    background-color: #FFFFFF;
}
.moren_active_span{
    color: #4293CA;
}
img{
    display: block;
    margin: 0 auto;
    max-width: 100%;
}


.footer_bottom_bottom{
    width: 739px;
    height: 29px;
    font-size: 21px;
    font-family: PingFangSC-Regular, PingFang SC;
   /* font-weight: 400;*/
    color: #FFFFFF;
    line-height: 29px;
}
.footer_bottom{
    text-align: center;
    margin-top: 10px;
    height: 150px;
    background: #001831;
}
.footer_bottom ul li{
    margin-right: 3px;
    color: #FFFFFF;
}

.footer_bottom_top{
    width: 620px;
    height: 35px;
    font-family: PingFangSC-Semibold, PingFang SC;
    /*font-weight: 600;*/
    color: #FFFFFF;
    padding-top: 45px;
    padding-bottom: 4px;
}

.house{
    width: 23px;
    height: 23px;
    margin-top: 4px;
    display: block;
    float: left;
}
.house img{
    display: block;
    width: 23px;
    height: 23px;
}
.copy{
    width: 112px;
    height: 29px;
    font-size: 21px;
    margin-top: 0;
    display: block;
    float: left;
}
.company{
    font-size: 21px;
    width: 450px;
    height: 29px;
    display: block;
    float: left;
}