#lightboxOverlay {
    position: fixed !important; 
    top: 0; 
    left: 0; 
    height: 100% !important; 
    width: 100% !important; 
}
#lightbox {
    position: fixed !important; 
    top: 50% !important; 
    transform: translateY(-50%); 
}

#lightbox .lb-details .lb-caption {
    display: none !important;
}