.footer{
    width: 100%;
    background-color: #232323;
    padding-top: 40px;
    padding-bottom: 20px;
}

.footer>.content{
    width: 1200px;
    color: rgb(75, 75, 75);;
    margin: 0 auto;
}

.footer>.content>.top{
    overflow: hidden;
    font-size: 14px;
    position: relative;
}

.footer>.content>.top>.top_left{
    float: left;
    overflow: hidden;
}

.footer>.content>.top>.top_left>ul{
    float: left;
    margin-right: 120px;
}

.footer>.content>.top>.top_left>ul>li{
    margin-bottom: 5px;
}

.footer>.content>.top>.top_right{
    font-size: 28px;
    position: absolute;
    bottom: 30px;
    right: 50px;
}

.footer>.content>.bom{
    margin-top: 50px;
}

.siteBackToTop{
    width: 50px;
    height: 50px;
    background: url('../images/04.png') no-repeat center center / cover;
    position: fixed;
    right: 50px;
    bottom: 50px;
    z-index: 9999;
    cursor: pointer;
    transition: all .3s linear;
    display: none;
}
.siteBackToTop:hover{
    opacity: .5;
}