#moveToTop {
    font-size: 40px;
    color: rgb(134, 134, 134);
}

#div_top_button {
    background-color: rgb(255, 255, 255);
    position: fixed;
    top: calc(100% - 80px);
    left: calc(50% - 25px);
    width: 50px;
    height: 50px;
    text-align: center;
    border-radius: 25px;
    display: none;
    transition: background-color 100ms linear;
    transition: box-shadow 100ms linear;

    box-shadow: 0px 0px 30px rgb(189, 189, 189);
}

#div_top_button:hover {
    background-color: rgb(226, 226, 226);
    box-shadow: 0px 0px 30px rgb(117, 117, 117);
}