/* Start-Bild Popup */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
#overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}
#overlay img {
    max-width: 90%;
    max-height: 90vh;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(255, 255, 255, 0.5);
}