/* entire container, keeps perspective */
.card-container {
    -webkit-perspective: 800px;
    -moz-perspective: 800px;
    -o-perspective: 800px;
    perspective: 800px;
    margin-bottom: 30px;
}
/* flip the pane when hovered */
.card-container:not(.manual-flip):hover .card,
.card-container.hover.manual-flip .card{
    -webkit-transform: rotateY( 180deg );
    -moz-transform: rotateY( 180deg );
    -o-transform: rotateY( 180deg );
    transform: rotateY( 180deg );

}


.card-container.static:hover .card,
.card-container.static.hover .card {
    -webkit-transform: none;
    -moz-transform: none;
    -o-transform: none;
    transform: none;
}
/* flip speed goes here */
.card {
    -webkit-transition: -webkit-transform .5s;
    -moz-transition: -moz-transform .5s;
    -o-transition: -o-transform .5s;
    transition: transform .5s;
    -webkit-transform-style: preserve-3d;
    -moz-transform-style: preserve-3d;
    -o-transform-style: preserve-3d;
    transform-style: preserve-3d;
    position: relative;
    border-radius: 4px;

}

/* hide back of pane during swap */
.front, .back {
    -webkit-backface-visibility: hidden;
    -moz-backface-visibility: hidden;
    -o-backface-visibility: hidden;
    backface-visibility: hidden;
    position: absolute;
    top: 0;
    left: 0;
    background-color: #FFF;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.14);
}

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

/* back, initially hidden pane */
.back {
    -webkit-transform: rotateY( 180deg );
    -moz-transform: rotateY( 180deg );
    -o-transform: rotateY( 180deg );
    transform: rotateY( 180deg );
    z-index: 3;
}

.back .btn-simple{
    position: absolute;
    left: 0;
    bottom: 4px;
}