* {
  margin: 0;
  padding: 0;
}
body {
  font: 13px/1.4 helvetica, arial;
}
.stage {
  -webkit-perspective: 500;
  -moz-perspective: 500;
  perspective: 500;
}
.polygon,
.shape,
.layer {
  -webkit-transform-style: preserve-3d;
  -moz-transform-style: preserve-3d;
  transform-style: preserve-3d;
}
.polygon .shape {
  position: relative;
}
.polygon .shape,
.polygon .shape .layer,
.polygon .shape .front,
.polygon .shape .back {
  height: 100%;
}
.polygon .shape .layer {
  background-size: cover;
  background-position: center;
  position: absolute;
}
.polygon .shape .layer.top,
.polygon .shape .layer.bottom {
  width: 100%;
}
.polygon .shape .layer .front,
.polygon .shape .layer .back {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
}
.polygon .shape .layer .back {
  -webkit-transform: rotateY(180deg) translateZ(1px);
  -moz-transform: rotateY(180deg) translateZ(1px);
  transform: rotateY(180deg) translateZ(1px);
}
#square,
#triangle,
#circle {
  -webkit-animation: rotation 10s;
  -moz-animation: rotation 10s;
  animation: rotation 10s;
  margin: 100px auto;
  height: 150px;
  width: 150px;
}
#square .layer .front,
#triangle .layer .front,
#circle .layer .front {
  background: #0af;
}
#square .layer .back,
#triangle .layer .back,
#circle .layer .back {
  background: #f0a;
}
@-webkit-keyframes rotation {
  50% {
    -webkit-transform: rotateX(90deg) rotateY(360deg) rotateZ(540deg);
    -moz-transform: rotateX(90deg) rotateY(360deg) rotateZ(540deg);
    transform: rotateX(90deg) rotateY(360deg) rotateZ(540deg);
  }
}
@-moz-keyframes rotation {
  50% {
    -webkit-transform: rotateX(90deg) rotateY(360deg) rotateZ(540deg);
    -moz-transform: rotateX(90deg) rotateY(360deg) rotateZ(540deg);
    transform: rotateX(90deg) rotateY(360deg) rotateZ(540deg);
  }
}
keyframes rotation 50% {
  -webkit-transform: rotateX(90deg) rotateY(360deg) rotateZ(540deg);
  -moz-transform: rotateX(90deg) rotateY(360deg) rotateZ(540deg);
  transform: rotateX(90deg) rotateY(360deg) rotateZ(540deg);
}