.sk-spinner-pulse {
  position: relative;
  top: 50%;
  width: 40px;
  height: 40px;
  margin: auto;
  border-radius: 100%;
  -webkit-animation: sk-pulseScaleOut 1s infinite ease-in-out;
  animation: sk-pulseScaleOut 1s infinite ease-in-out;
}

@-webkit-keyframes sk-pulseScaleOut {
  0% {
    -webkit-transform: scale(0);
    transform: scale(0);
  }

  100% {
    -webkit-transform: scale(1);
    transform: scale(1);
    opacity: 0;
  }
}


@keyframes sk-pulseScaleOut {
  0% {
    -webkit-transform: scale(0);
    transform: scale(0);
  }

  100% {
    -webkit-transform: scale(1);
    transform: scale(1);
    opacity: 0;
  }
}
