body {font-family: Arial, sans-serif;margin:0;padding:0;background:#fff;color:#003366;}
header {background:#0055aa;color:#fff;padding:20px;text-align:center;}
header nav ul {list-style:none;padding:0;margin:10px 0 0 0;display:flex;justify-content:center;gap:20px;}
header nav ul li a {color:#ffcc00;text-decoration:none;font-weight:bold;}
section {padding:40px 20px;border-bottom:1px solid #ccc;}
.galeria {display:flex;flex-wrap:wrap;gap:10px;justify-content:center;}
.galeria img {width:200px;height:auto;border:3px solid #0055aa;cursor:pointer;transition:transform 0.3s;}
.galeria img:hover {transform:scale(1.05);}
footer {background:#003366;color:#fff;text-align:center;padding:20px;}
.lightbox-overlay {position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.8);display:none;justify-content:center;align-items:center;}
.lightbox-overlay img {max-width:90%;max-height:90%;}