.flip-card {
    background-color: transparent;
    width: 300px;
    height: 300px;
    perspective: 1000px;
    align-content: center;
    float: left;
    margin-right: 5%;
    margin-bottom: 5%;
}

.flip-card-inner 
{
    background-color: transparent;
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.6s;
    transform-style: preserve-3d;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
}

.flip-card:hover
.flip-card-inner {
    transform: rotateY(180deg);
}

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

.flip-card-front 
{
    background-color: transparent;
    color: black;
    z-index: 2;
}

.flip-card-back 
{
    background-color: white;
    color: white;
    transform: rotateY(180deg);
    z-index: 1;
}