.flip-container {
    /*width: 100%;
    height: 100%;*/
    position: relative;
    /*perspective: 800px;*/
    /*display: inline-block;*/
}

.flip-container .flip-card {
    /*width: 100%;
    height: 100%;
    position: absolute;*/
    transform-style: preserve-3d;
    transition: transform 1s;
    /*display: inline-block;*/
}

.flip-container .flip-front { margin-top: -100%; }
/*.flip-container .flip-back { margin-top: 50%; }*/

.flip-container.flipped.flip-direction-x .flip-card {
    transform: rotateX(180deg);
}
.flip-container.flipped.flip-direction-y .flip-card {
    transform: rotateY(180deg);
}

.flip-container .flip-front, .flip-container .flip-back {
    /*position: absolute;
	width: 100%;*/
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transition: opacity .2s linear .3s;
    
    display: flex;
    justify-content: center;
    align-items: center;
}

.flip-container .flip-front, .flip-container.flipped .flip-back { opacity: 1; }
.flip-container .flip-back, .flip-container.flipped .flip-front { opacity: 0; }

.flip-container.flip-direction-x .flip-back {
    transform: rotateX(180deg);
}
.flip-container.flip-direction-y .flip-back {
    transform: rotateY(180deg);
}

/* IE only (not Edge) */
@media screen and (-ms-high-contrast: active), (-ms-high-contrast: none) {
    .flip-container .flip-front, .flip-container .flip-back {
        transform: none !important;
        position: absolute;
        top: 0;
        margin-top: 0;
    }
    .flip-container.flipped.flip-direction-x .flip-card, .flip-container.flipped.flip-direction-y .flip-card {
        transform: none !important;
    }
}