.card__father{
    margin: 20px;
    perspective: 1000px;
}

.card__father:hover .card__proyecto{
    transform: rotateY(180deg);
}

.card__proyecto{
    width: 350px;
    height: 250px;
    position: relative;
    transform-style: preserve-3d;
    transition: all 1200ms;
    
}

.card__front{
    background-size: cover;
    background-position: center;
}

.card__front,
.card__back{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    backface-visibility: hidden;
    transform-style: preserve-3d;
    border-radius: 20px;
}

.card__back{
    transform: rotateY(180deg);
    background-color:var(--color-flotante);
}