body {
  background-image: url(face.svg);
  background-repeat: no-repeat;
}
.whole_head {
  animation-timing-function: ease-in-out;
  animation-duration: 2s;
  animation-iteration-count: infinite;
  animation-name: head_down;
}
@keyframes head_down {
  50% {
    transform: translateY(12px);
  }
}
.eye_left,
.eye_right {
  animation-timing-function: ease-in-out;
  animation-duration: 2s;
  animation-iteration-count: infinite;
  animation-name: blinking;
}
@keyframes blinking {
  10% {
    opacity: 0;
  }
  12% {
    opacity: 1;
  }
}