/* entire container, keeps perspective */
.flip-container {
	perspective: 1000;
}
/* flip the pane when hovered */
.flip-container:hover .flipper, .flip-container.hover .flipper {
	transform: rotateY(180deg);
}

.flip-container, .front, .back {
	width: 320px;
	height: 480px;
}

/* flip speed goes here */
.flipper {
	transition: 0.6s;
	transform-style: preserve-3d;

	position: relative;
}

/* hide back of pane during swap */
.front, .back {
	backface-visibility: hidden;

	position: absolute;
	top: 0;
	left: 0;
}

/* front pane, placed above back */
.front {
	z-index: 2;
}

/* back, initially hidden pane */
.back {
	transform: rotateY(180deg);
}

.flip-container:hover .flipper, .flip-container.hover .flipper, .flip-container.flip .flipper {
	transform: rotateY(180deg);
}