body {
  font-family: Arial, sans-serif;
  background-color: #fff;
  color: #111;
  margin: 0;
  padding: 0;
}

header {
  background-color: #111;
  color: white;
  padding: 2rem;
  text-align: center;
}

.subtitulo {
  font-size: 1.2rem;
  margin-top: 0.5rem;
  color: #f33;
}

.contenido {
  padding: 2rem;
  max-width: 600px;
  margin: auto;
}

.formulario {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 140px;
}

input, button {
  padding: 1rem;
  font-size: 1rem;
}

button {
  background-color: #f33;
  color: white;
  border: none;
  cursor: pointer;
}

button:hover {
  background-color: #c00;
}

.gracias {
  text-align: center;
  padding: 2rem;
}