body { font-family: Arial, sans-serif; margin:0; padding:0; }
header { background:#004080; color:#fff; padding:10px; }
nav ul { list-style:none; display:flex; gap:15px; padding:0; }
nav a { color:white; text-decoration:none; }
main { padding:20px; }
footer { background:#f0f0f0; padding:20px; font-size:14px; }
.galeria { display:flex; gap:10px; flex-wrap:wrap; margin-top:10px; }
.galeria img { width:200px; height:auto; border-radius:5px; }