#lb-overlay{position:fixed;inset:0;background:rgba(0,0,0,.85);display:none;z-index:9999;align-items:center;justify-content:center;flex-direction:column}
#lb-overlay.open{display:flex}
#lb-overlay img{max-width:92vw;max-height:80vh;border:6px solid #fff;background:#fff}
#lb-cap{color:#fff;font:13px Verdana,Arial,sans-serif;margin-top:10px;max-width:80vw;text-align:center;min-height:1.5em}
#lb-overlay button{position:absolute;background:rgba(255,255,255,.15);color:#fff;border:0;font-size:28px;padding:8px 14px;cursor:pointer}
#lb-prev{left:10px;top:50%}#lb-next{right:10px;top:50%}#lb-close{right:10px;top:10px}