@keyframes colorChange {
  0% { color: #000000; }
  25% { color: #ff0000; }
  50% { color: #00ff00; }
  75% { color: #0000ff; }
  100% { color: #000000; }
}

.display-2 {
  animation: colorChange 10s infinite;
}

@keyframes scaleText {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.display-3 {
  animation: scaleText 3s infinite;
}