button.like-request-flash {
  animation: matched-like-request-flash 720ms ease-out;
}

@keyframes matched-like-request-flash {
  0% {
    filter: brightness(1);
    box-shadow: 0 0 0 rgba(255, 255, 255, 0);
  }

  35% {
    filter: brightness(2.35);
    box-shadow:
      0 0 0 4px rgba(255, 255, 255, 0.22),
      0 0 28px rgba(255, 255, 255, 0.72);
  }

  100% {
    filter: brightness(1);
    box-shadow: 0 0 0 rgba(255, 255, 255, 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  button.like-request-flash {
    animation-duration: 160ms;
  }
}