//* container com a perspectiva */
.flip-container {
	perspective: 1000;
}
	/* feito com o hover */
	.flip-container:hover .flipper, .flip-container.hover .flipper {
		transform: rotateY(180deg);
	}

.flip-container, .front, .back {
	width: 240px;
	height: 224px;
}

/* velocidade da animação */
.flipper {
	transition: 0.6s;
	transform-style: preserve-3d;

	position: relative;
}

/* esconder parte de trás do painel durante a troca */
.front, .back {
	backface-visibility: hidden;
	position: absolute;
	top: 1px;
	left: 2px;
}

/* coloca o painel frontal acima */
.front {
	z-index: 2;
	/* for firefox 31 */
	transform: rotateY(0deg);
}

/* painel de volta, inicialmente escondido */
.back {
	transform: rotateY(180deg);
}

.box{
  width:240px;
  height:224px;
  font-size:40px;
  text-align:center;

  font-family: 'Lato', sans-serif; font-weight:900;
  cursor:pointer;
}

.box-front{
  background:;
}
.box-back{	
  background:;
}

@import url(https://fonts.googleapis.com/css?family=Lato:400,700,900);