@-webkit-keyframes pulse {
  100% { -webkit-transform: scale3d(1.2,1.2,1.2); transform: scale3d(1.2,1.2,1.2)}
}

@keyframes pulse {
  100% { -webkit-transform: scale3d(1.2,1.2,1.2); transform: scale3d(1.2,1.2,1.2)}
}

svg {
  max-width: 100vmin;
  max-height: 100vmin;
  display: block;
  margin: 0 auto;
  -webkit-animation: pulse 1s ease-in-out alternate infinite;
          animation: pulse 1s ease-in-out alternate infinite
}