body {
    background-color: transparent;
    display: flex;
    justify-content: center;
    align-items: center;
    height: auto;
    text-align: center;
    padding: 2%;
}

.cubo {
    position: relative;
    width: auto;
    height: auto;
    transform-style: preserve-3d;
    animation: rotar 10s infinite linear;
    margin: 30%;
}

.cara {
    position: absolute;
    width: 200px;
    height: 200px;
    background: linear-gradient(45deg, #204468, #2b708d);
    color: white;
    font-size: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 2px solid rgba(0, 0, 0, 0.1);
}

.cara-frontal {
    transform: translateZ(100px);

}

.cara-trasera {
    transform: rotateY(180deg) translateZ(100px);
    background-color: #2b708d;
    
}

.cara-lateral-izquierda {
    transform: rotateY(-90deg) translateZ(100px);
}

.cara-lateral-derecha {
    transform: rotateY(90deg) translateZ(100px);
}

.cara-superior {
    transform: rotateX(90deg) translateZ(100px);
}

.cara-inferior {
    transform: rotateX(-90deg) translateZ(100px);
}

@keyframes rotar {
    0% {
        transform: rotateX(-250deg) rotateY(0);
    }
    100% {
        transform: rotateX(360deg) rotateY(360deg);
    }
}