.spinner {
  width: 40px;
  height: 40px;
  border-radius: 100%;
  -webkit-animation: scaleout 1.0s infinite ease-in-out;
  animation: scaleout 1.0s infinite ease-in-out;
}

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