.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.9);display:flex;justify-content:center;align-items:center;z-index:1000} .lightbox.hidden{display:none} .lightbox img{max-width:90vw;max-height:90vh} .lightbox button{position:absolute;background:none;border:none;color:white;font-size:2rem;cursor:pointer} .lightbox-close{top:1rem;right:1rem} .lightbox-prev{left:1rem;top:50%;transform:translateY(-50%)} .lightbox-next{right:1rem;top:50%;transform:translateY(-50%)}