body {
    @media (min-width: 768px) {
        background-color: #cccccc;
    }
    @media (max-width: 768px) {
        background-image: radial-gradient(circle at 50% 50%, #ebecf1, #abaec3);
    }
}

.contenedor {
    @media (min-width: 768px) {
        background-image: radial-gradient(circle at 50% 50%, #ebecf1, #abaec3);
        min-height: 600px;
        min-width: 800px;
    }

}

.grilla-articulo {
    @media (min-width: 768px) {
        height: 300px;
    }
}