.backface-visibility-hidden {
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.tile {
  color: white;
  padding: 15px;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
}
.flipper-container {
  float: left;
  width: 250px;
  height: 250px;
  margin-right: 15px;
  display: block;
  perspective: 1000px;
  -webkit-perspective: 1000px;
  -moz-perspective: 1000px;
  -ms-perspective: 1000px;
}
.flipper-container span {
  color: white;
}
.flipper-container > div.flipper {
  float: left;
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  -moz-transform-style: preserve-3d;
  -ms-transform-style: preserve-3d;
}
.flipper-container > div.flipper .front,
.flipper-container > div.flipper .back {
  float: left;
  display: block;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  position: absolute;
  top: 0;
  left: 0;
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  -moz-transform-style: preserve-3d;
  -ms-transform-style: preserve-3d;
  -webkit-transition: -webkit-transform ease 500ms;
  -moz-transition: -webkit-transform ease 500ms;
  -ms-transition: -webkit-transform ease 500ms;
  -o-transition: -webkit-transform ease 500ms;
  transition: -webkit-transform ease 500ms;
  -webkit-transition: transform ease 500ms;
  -moz-transition: transform ease 500ms;
  -ms-transition: transform ease 500ms;
  -o-transition: transform ease 500ms;
  transition: transform ease 500ms;
}
.flipper-container > div.flipper .front {
  z-index: 2;
  background: #19489E;
  /* front tile styles go here! */
}
.flipper-container > div.flipper .back {
  background: #9E1919;
  /* back tile styles go here! */
}
.flipper-container.horizontal .front {
  transform: rotateY(0deg);
  -ms-transform: rotateY(0deg);
  -webkit-transform: rotateY(0deg);
  -o-transform: rotateY(0deg);
  -moz-transform: rotateY(0deg);
}
.flipper-container.horizontal .back {
  transform: rotateY(-180deg);
  -ms-transform: rotateY(-180deg);
  -webkit-transform: rotateY(-180deg);
  -o-transform: rotateY(-180deg);
  -moz-transform: rotateY(-180deg);
}
.flipper-container.horizontal div.flipper.flipped .front {
  transform: rotateY(180deg);
  -ms-transform: rotateY(180deg);
  -webkit-transform: rotateY(180deg);
  -o-transform: rotateY(180deg);
  -moz-transform: rotateY(180deg);
}
.flipper-container.horizontal div.flipper.flipped .back {
  transform: rotateY(0deg);
  -ms-transform: rotateY(0deg);
  -webkit-transform: rotateY(0deg);
  -o-transform: rotateY(0deg);
  -moz-transform: rotateY(0deg);
}
.flipper-container.vertical .front {
  transform: rotateX(0deg);
  -ms-transform: rotateX(0deg);
  -webkit-transform: rotateX(0deg);
  -o-transform: rotateX(0deg);
  -moz-transform: rotateX(0deg);
}
.flipper-container.vertical .back {
  transform: rotateX(-180deg);
  -ms-transform: rotateX(-180deg);
  -webkit-transform: rotateX(-180deg);
  -o-transform: rotateX(-180deg);
  -moz-transform: rotateX(-180deg);
}
.flipper-container.vertical div.flipper.flipped .front {
  transform: rotateX(180deg);
  -ms-transform: rotateX(180deg);
  -webkit-transform: rotateX(180deg);
  -o-transform: rotateX(180deg);
  -moz-transform: rotateX(180deg);
}
.flipper-container.vertical div.flipper.flipped .back {
  transform: rotateX(0deg);
  -ms-transform: rotateX(0deg);
  -webkit-transform: rotateX(0deg);
  -o-transform: rotateX(0deg);
  -moz-transform: rotateX(0deg);
}