.pagetop{
    display: none;
    position: fixed;
    right: 15px;
    bottom: 40px;
    z-index: 9999;
}
.pagetop a{
    display: block;
    font-size: 0;
    width: 50px;
    height: 50px;
    text-align: center;
    background: #f4d3d6;
    border-radius: 50%;
    line-height: 50px;
}
.pagetop a i{
    font-size: 20px;
    color:#fff;
    line-height: 50px;
}