style.css

@import url('https://fonts.googleapis.com/css?family=Oswald:400,700');

body {
    height: 70vh;
    display: grid;
    place-items: center;
    font-family: 'Oswald', sans-serif;
}

.container {
    display: flex;
    align-content: center;
    align-items: center;
    justify-content: center;
}

.card {
    width: 300px;
}


.card__content {
    text-align: center;
    position: relative;
    padding: 8em 5em;
    transition: 3s;
    transform-style: preserve-3d;
}

.card:hover .card__content {
    transform: rotateY(.5turn);
}

.card__front,
.card__back {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    backface-visibility: hidden;
    transform-style: preserve-3d;
    display: grid;
    align-content: center;
}

.card__front {
    background-color: rgba(255, 255, 255, 0.467);
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    background-blend-mode: overlay;
    color: #333;
}

.card__front::before {
    content: '';
    position: absolute;
    --spacer: 1em;
    top: var(--spacer);
    bottom: var(--spacer);
    left: var(--spacer);
    right: var(--spacer);
    border: 3px solid #0275d8;
    transform: translateZ(1.5rem);
}

.card__back {
    transform: rotateY(.5turn);
    background-color: #81c3fd;
}

.card__title {
    font-size: 3.5rem;
    transform: translateZ(3rem);
}

.card__body {
    font-size: 3rem;
    transform: translateZ(1.5rem);
    cursor: pointer;
}