body{font-family:Arial,sans-serif;margin:0;line-height:1.6} .banner{background:#c0392b;color:#fff;text-align:center;padding:10px;font-weight:bold}.hero{background:#1f2937;color:#fff;padding:80px 20px;text-align:center}.btn{background:#d4a017;color:#fff;padding:12px 20px;text-decoration:none}.hero,.banner{display:block}section{padding:30px}form{display:flex;flex-direction:column;max-width:500px;gap:10px}input,textarea{padding:10px}button{padding:12px;background:#1f2937;color:#fff;border:0}footer{text-align:center;padding:20px;background:#eee}.note{font-size:.9em;color:#666}