#pointer {
  position: absolute;
  top: 0;
  left: 0;
  transition: cubic-bezier(0.23, 1, 0.32, 1) 0.2s;
  display: block;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(160, 0, 255, 0.8);
  box-shadow: inset 0 0 20px black, 0 0 30px rgba(0, 0, 255, 0.8);
  z-index: -1;
}