rotateBoxes9.css

body {
  padding: 5%;
  background-color: #333;
  height: 3000px; }

.startButton {
  position: fixed;
  top: 5%;
  left: 25%;
  width: 50%;
  height: 50px;
  font-size: 30px;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  letter-spacing: 3px;
  /*-webkit-transform: translateZ(300px) rotateX(0deg);
  transform: translateZ(300px) rotateX(0deg);*/ }

.stage {
  position: fixed;
  top: 40%;
  width: 90%;
  -webkit-perspective: 3000;
  -ms-perspective: 3000;
  -o-perspective: 3000;
  -moz-perspective: 3000px;
  perspective: 3000;
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d; }

.cube {
  position: relative;
  float: left;
  width: calc(100%/3);
  height: 482px;
  -webkit-transition: all ease-in-out 1s;
  transition: all ease-in-out 1s;
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  -webkit-transform-origin: 0 20%;
  transform-origin: 0 20%; }

.cube div {
  position: absolute;
  width: 100%;
  height: 200px;
  text-align: center;
  font-size: 30px;
  color: #fff;
  font-weight: bold;
  line-height: 200px;
  transition: all ease 1s; }

.cube1 {
  background-color: #5a5;
  -webkit-transform: translateZ(241px) rotateX(0deg);
  transform: translateZ(241px) rotateX(0deg); }

.cube2 {
  background-color: #595;
  -webkit-transform: translate3D(0, 170px, 170px) rotateX(-45deg);
  transform: translate3D(0, 170px, 170px) rotateX(-45deg); }

.cube3 {
  background-color: #5aa;
  -webkit-transform: translateY(241px) rotateX(-90deg);
  transform: translateY(241px) rotateX(-90deg); }

.cube4 {
  background-color: #599;
  -webkit-transform: translate3D(0, 170px, -170px) rotateX(-135deg);
  transform: translate3D(0, 170px, -170px) rotateX(-135deg); }

.cube5 {
  top: 0;
  background-color: #a55;
  -webkit-transform: translateZ(-241px) rotateX(180deg);
  transform: translateZ(-241px) rotateX(180deg); }

.cube6 {
  top: 0;
  background-color: #955;
  -webkit-transform: translate3D(0, -170px, -170px) rotateX(135deg);
  transform: translate3D(0, -170px, -170px) rotateX(135deg); }

.cube7 {
  background-color: #cbcb3c;
  -webkit-transform: translateY(-241px) rotateX(90deg);
  transform: translateY(-241px) rotateX(90deg); }

.cube8 {
  background-color: #78983c;
  -webkit-transform: translate3D(0, -170px, 170px) rotateX(45deg);
  transform: translate3D(0, -170px, 170px) rotateX(45deg); }

.screenEdge {
  position: absolute;
  top: -200px;
  width: 100%;
  height: 300px;
  border-top: #333 150px solid;
  border-bottom: #333 150px solid;
  border-radius: 3px;
  -webkit-transform: translateZ(260px);
  transform: translateZ(260px); }

@media screen and (max-width: 500px) {
  .cube div {
    font-size: 16px;
    font-weight: normal; }

  .startButton {
    position: fixed;
    left: 45%;
    z-index: 999; } }