#lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

#lightbox img {
    max-width: 95vw;
    max-height: 95vh;
    object-fit: contain;
    display: block;
    margin: auto;
}

.thumbnail-container {
    max-width: 960px;   /* cap the total width */
    margin: 0 auto;     /* center the row */
    padding: 1rem;
}

/*.thumbnail-container img {*/
/*    width: 100%;*/
/*    height: auto;*/
/*    cursor: pointer;*/
/*    border-radius: 8px;*/
/*}*/

.thumbnail-row {
    display: flex;
    gap: 1rem;
}

.thumbnail-row img {
    flex: 1;            /* evenly split space */
    width: 100%;
    height: auto;
    object-fit: cover;
    cursor: pointer;
    border-radius: 8px;
}

@media (max-width: 600px) {
    .thumbnail-row {
        display: block;
        gap: 1rem;
    }

    .thumbnail-container {
        max-width: 100%;
    }
}