.flip-card {

    perspective: 1000px;

}

.flip-card-inner {
    position: relative;
    transition: transform 0.6s;
    transform-style: preserve-3d;

}

.rotate {
    transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.flip-card-back {
    text-align: center;
    transform: rotateY(180deg);
}