.sk-three-bounce {
  $animationDuration: 1.4s;
  $delayRange: 0.32s;
  margin: $spinkit-spinner-margin;
  width: $spinkit-size * 2;
  text-align: center;

  .sk-child {
    width: $spinkit-size / 2;
    height: $spinkit-size / 2;
    background-color: $spinkit-spinner-color;

    border-radius: 100%;
    display: inline-block;
    animation: sk-three-bounce $animationDuration ease-in-out 0s infinite both;
  }

  .sk-bounce1 { animation-delay: -$delayRange; }
  .sk-bounce2 { animation-delay: -$delayRange / 2; }
}

@keyframes sk-three-bounce {
  0%, 80%, 100% {
    transform: scale(0);
  } 40% {
    transform: scale(1.0);
  }
}