.footer_bg{
    background: #1d2739;
}
.back_top{
    width: 40px;
    height: 40px;
    position: fixed;
    right: 108px;
    bottom: 120px;
    transition: all .3s;
    z-index: 999;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    background: url(/images/back.png) no-repeat center;
    background-size: contain;
    
}
.back_top:hover{
    background: url(/images/back_hover.png) no-repeat center;
    background-size: contain;
}
.footer_href{
    display: block;
    width: 138px;
}
.footer_href img{
    width: 100%;
}
.booter_flex{
    display: flex;
    padding-top: 80px;
    padding-bottom: 100px;
    flex-direction: row;
}
.booter_flex ul{
    float: right;
    margin-left: 104px;
    flex: auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    width: calc( 100% - 140px - 104px );
}
.booter_flex ul li{
    float: left;
    font-size: 12px;
    min-width: 100px;
}
.booter_flex li h2{
    color: var(--hoverColor);
    font-size: 12px;
    line-height: 32px;
    font-weight: 700;
}
.booter_flex li  a{
    display: block;
    line-height: 24px;
    height: 24px;
    font-size: 12px;
    opacity: .7;
    color: #fff;
    transition: all .3s;
}
.booter_flex li  a:hover{
    opacity: 1;
}
.footer_bt{
    padding: 15px 0;
    border-top: 1px solid #3c4659;
    text-align: center;
    color: #9599a1;
}
.footer_bt a,.footer_bt span{
    line-height: 20px;
    font-size: 12px;
    color: #9599a1;
    transition: all .3s;
}
.footer_bt a:hover{
    color: #fff;
}