.toTop {
    width: 50px;
    height: 50px;
    font-size: 24px;
    line-height: 46px;
    color: #fff;
    background: #dd220e;
    border-radius: 50%;
    position: fixed;
    right: 40px;
    bottom: 40px;
    display: none;
    overflow: hidden;
    text-align: center;
    text-decoration: none;
    z-index: 20;