aaronpenne_move-completed-tasks/styles.css

@keyframes move-completed-flash {
  0% { background-color: hsla(var(--accent-h), var(--accent-s), var(--accent-l), 0.12); }
  100% { background-color: transparent; }
}

.move-completed-highlight {
  animation: move-completed-flash 1.8s ease-out;
  border-radius: 3px;
}