.jjm-lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.9);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999999;
}
.jjm-lightbox-overlay img {
    max-width: 95vw;
    max-height: 95vh;
}