@layer utilities {
  @keyframes appear-then-fade {
    0%, 100% { opacity: 0; }
    5%, 60% { opacity: 1; }
  }

  @keyframes pulse-colors {
    0%, 100% { background-color: var(--pulse-color-from); }
    50% { background-color: var(--pulse-color-to); }
  }
}