@keyframes play210 {
  0% {
    background-position: 0px 0px;
  }
  100% {
    background-position: -168000px 0px;
  }
}
.shapeshifter {
  animation-duration: 10000ms;
  animation-timing-function: steps(210);
  width: 800px;
  height: 400px;
  background-repeat: no-repeat;
}
.shapeshifter.play {
  animation-name: play210;
  animation-iteration-count: 4;
  animation-delay: 4s;
}