@keyframes windmill-pulse {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(356deg);
  }
}

.rai-windmill {
  width: 1em;
  height: 1em;
  position: relative;
  animation-name: windmill-pulse;
  animation-duration: inherit;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  &:after {
    content: "";
    background: currentColor;
    border-radius: 0.125em;
    position: absolute;
    top: 0;
    left: 50%;
    margin-left: -0.0625em;
    width: 0.125em;
    height: 100%;
  }
}