.flip-container {
    -webkit-perspective: 1000;
       -moz-perspective: 1000;
         -o-perspective: 1000;
            perspective: 1000;
    border: 1px solid #ccc;
}

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

.flip-container, .front, .back {
	width: 100%;
	height: 427px;
}

.flipper {
	-webkit-transition: 0.6s;
	-webkit-transform-style: preserve-3d;

	-moz-transition: 0.6s;
	-moz-transform-style: preserve-3d;
    
    -o-transition: 0.6s;
	-o-transform-style: preserve-3d;

	transition: 0.6s;
	transform-style: preserve-3d;

	position: relative;
}

.front, .back {
	-webkit-backface-visibility: hidden;
	   -moz-backface-visibility: hidden;
         -o-backface-visibility: hidden;
	        backface-visibility: hidden;
	position: absolute;
	top: 0;
	left: 0;
}

.front-1 {
	background: url("../img/4-promociones/promo-bg-0.webp") 0 0 no-repeat;
    background-position: center;
	z-index: 2;
}
.front-2 {
	background: url("../img/4-promociones/promo-bg-1.webp") 0 0 no-repeat;
    background-position: center;
	z-index: 2;
}
.front-3 {
	background: url("../img/4-promociones/promo-bg-2.webp") 0 0 no-repeat;
    background-position: center;
	z-index: 2;
}

.back {
	-webkit-transform: rotateY(180deg);
	   -moz-transform: rotateY(180deg);
    	 -o-transform: rotateY(180deg);
			transform: rotateY(180deg);
	background: var(--azul-osc);
}

/* .front .name {
	font-size: 2em;
	display: inline-block;
	background: rgba(33, 33, 33, 0.9);
	color: #f8f8f8;
	font-family: Courier;
	padding: 5px 10px;
	border-radius: 5px;
	bottom: 60px;
	left: 25%;
	position: absolute;
	text-shadow: 0.1em 0.1em 0.05em #333;

	-webkit-transform: rotate(-20deg);
	-moz-transform: rotate(-20deg);
    -o-transform: rotate(-20deg);
	transform: rotate(-20deg);
} */

.back-logo {
	position: absolute;
	top: 40px;
	left: 90px;
	width: 160px;
	height: 117px;
	background: url(http://davidwalsh.name/demo/logo.png) 0 0 no-repeat;
}

.back-title {
	font-weight: bold;
	color: #00304a;
	position: absolute;
	top: 180px;
	left: 0;
	right: 0;
	text-align: center;
	text-shadow: 0.1em 0.1em 0.05em #acd7e5;
	font-family: Courier;
	font-size: 2em;
}