#scroll-to-top-button {
    position: fixed;
    bottom: 30px;
    right: 5px;   
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 1000;
    display: none;
}
#scroll-to-top-button img {
    width: 60px;
}
#scroll-to-top-button.show {
    display: flex;
}