#page-top a {
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 5px;
    width: 60px;
    height: 60px;
    color: #fff;
    text-align: center;
    text-transform: uppercase;
    text-decoration: none;
    font-size: 0.6rem;
    transition: all 0.3s;
}

#page-top img {
    width: 56px;
    height: 56px;
}

#page-top {
    position: fixed;
    right: 40px;
    bottom: 55px;
    z-index: 7;
    /*はじめは非表示*/
    opacity: 0;
    transform: translateY(200px);
}

#page-top.UpMove {
    animation: UpAnime 0.5s forwards;
}

@keyframes UpAnime {
    from {
        opacity: 0;
        transform: translateY(200px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

#page-top.DownMove {
    animation: DownAnime 0.5s forwards;
}

@keyframes DownAnime {
    from {
        opacity: 1;
        transform: translateY(0);
    }

    to {
        opacity: 1;
        transform: translateY(130px);
    }
}