#wheel-rotator {
  will-change: transform;
}

.pin {
  width: 0; height: 0;
  border-left: 18px solid transparent;
  border-right: 18px solid transparent;
  border-bottom: 28px solid #9333ea;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,.3));
  transform: rotate(180deg);
}