.confetti-piece {
  position: absolute;
  width: 8px;
  height: 12px;
  background-color: red;
  opacity: 1;
  animation: explode 1s ease-out forwards;
  pointer-events: none;
}

@keyframes explode {
  100% {
    transform: translate(var(--dx), var(--dy)) rotate(720deg);
    opacity: 0;
  }
}