/* the background picture */
.bgpicture-dunkel {
    background-image: url(https://www.tcris.at/bilder/bilder_background_2022/bg_dunkel.jpg);
    background-position: center center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-color: #000;
}

.bgpicture-hell {
    background-image: url(https://www.tcris.at/bilder/bilder_background_2022/bg_hell.jpg);
    background-position: center center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-color: #000;
}

.bgpicture-julia {
    background-image: url(https://www.tcris.at/bilder/bilder_background_2022/bg_julia_03.jpg);
    background-position: center center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-color: #000;
}

.bgpicture-werkstatt {
    background-image: url(https://www.tcris.at/bilder/bilder_background_2022/bg_werkstatt.jpg);
    background-position: center center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-color: #000;
}