.card-wrapper {
    position: relative;
    min-width: 400px;
    height: 500px;
    overflow: hidden;
}

@media (max-width: 600px) {
    .card-wrapper {
        min-width: 300px;
        height: 400px;
    }
}

.card {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.5s ease-in-out;
}

.card:hover {
    transform: translateY(-100%);
    opacity: 0.8;
}

.card-side {
    position: absolute;
    width: 100%;
    height: 100%;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.card-front {
    background-image: url('files/family.jpg');
    top: 0;
}

.card-back {
    background-image: url('files/photo-family_2.jpg');
    top: 100%;
}