button.toggle-reseñas {
  background-color: transparent;
  border: 1px solid #444;
  color: #ccc;
  padding: 6px 12px;
  border-radius: 5px;
  cursor: pointer;
}
button.toggle-reseñas:hover {
  background-color: #222;
}

.testimonial {
  border: 1px solid #333;
  padding: 10px;
  margin-bottom: 16px;
  border-radius: 8px;
  background-color: #111;
}