html {
    height: 100%;
    width: 100%;
    background-color: #6f604c;
    background-image: url('https://hansuvious.neocities.org/hobbies.webp');
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
}

#tisch {
    margin: 30px auto;
    background-color: antiquewhite;
    background-position: center;
    background-size: contain;
    background-repeat: no-repeat;
    width: 1000px;
    height: 640px;
}

#ds {
    background-image: url;
}

#ds a:hover {
    background-image: url anderes image;
}