*{
	margin: 0;
	padding: 0;
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
}

.wrap{
	width: 100%;
	margin: 50px auto;
	display: -webkit-box;
	display: -webkit-flex;
	display: -ms-flexbox;/*
	display: flex;
	-webkit-box-pack: center;
	-webkit-justify-content: center;
	-ms-flex-pack: center;
	justify-content: center;*/
}

.tarjeta-wrap{
	margin: 10px;
	-webkit-perspective: 800;
	perspective: 800;
    cursor: pointer;
}

.tarjeta{
	width: 350px!important;
	height: 350px!important;
	background: #fff;
	position: relative;
	-webkit-transform-style: preserve-3d;
	transform-style: preserve-3d;
	-webkit-transition: .7s ease;
	transition: .7s ease;
    /*-webkit-box-shadow: 0px 10px 15px -5px rgba(0,0,0,0.65);
    box-shadow: 0px 10px 15px -5px rgba(0,0,0,0.65);*/
    box-shadow: 3px 3px 9px #aaa;
}

.adelante, .atras{
	width: 100%;
	height: 100%;
	position: absolute;
    
	top: 0;
	left: 0;
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;

}

.adelante{
	width: 100%;
}

.atras{
	-webkit-transform: rotateY(180deg);
	transform: rotateY(180deg);
	padding: 15px;
	display: -webkit-box;
	display: -webkit-flex;
	display: -ms-flexbox;
	display: flex;
	-webkit-box-pack: center;
	-webkit-justify-content: center;
	-ms-flex-pack: center;
	justify-content: center;
	-webkit-box-align: center;
	-webkit-align-items: center;
	-ms-flex-align: center;
	align-items: center;
	text-align: center;
	color: #fff;
	font-family: "open sans";
    -webkit-box-shadow: 0px 10px 15px -5px rgba(0,0,0,0.65);
	box-shadow: 0px 10px 15px -5px rgba(0,0,0,0.65);
}

.tarjeta-wrap:hover .tarjeta{
	-webkit-transform: rotateY(180deg);
	transform: rotateY(180deg);
}

.card1{
	background-image: url(img/1.jpg);
	background-size: cover;
}

.card2{
	background-image: url(img/2.jpg);
	background-size: cover;
}

.card3{
	background-image: url(img/3.jpg);
	background-size: cover;
}





@media (min-width: 801px){
    .tarjeta{
    	width: 300px;
    }
    
    
    
}