body{font-family:Arial,sans-serif;background:#f5f5f5}.container{max-width:800px;margin:auto;background:#fff;padding:20px;border-radius:8px}input,textarea{width:100%;margin:5px 0;padding:8px}.bloque{border:1px solid #ddd;padding:10px;margin-top:10px}.fila{display:flex;gap:5px}button{margin-top:10px;padding:8px 12px}