.ggh-back-to-top {
    background-color: var(--main-color);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    z-index: 100;
    bottom: 40px;
    right: 40px;
    width: 40px;
    height: 40px;
    border-radius: 5px;
    transition: all 800ms ease;
}

.ggh-back-to-top .iconfont {
    font-size: 16px;
}