.contain {
  position: relative;
  margin: -75px auto;
  margin-bottom: 125px;
  width: 210px;
  height: 300px;
}

img {
  position: absolute;
  -webkit-animation: turn 2s infinite;
  animation: turn 2s infinite;
}

.donut-front {
  z-index: 5;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

@-webkit-keyframes turn {
  to {
    -webkit-transform: rotateY(360deg);
  }
}

@keyframes turn {
  to {
    transform: rotateY(360deg);
  }
}