article {
    border: 2px solid black;
    border-radius: 5px;
    padding: 1%;
    margin: 1%;
}

.fa-brands {
    margin: 1%;
    font-size: 4rem;
    position: fixed;
    bottom: 5%;
    right: 2%;
    z-index: 20;
}

img {
    width: 15%;
}

.enLinea {
    display: flex;
}

/* Posición */ 
article {
    width: 50%;
}

section {
    display: flex;
}

/* puntos de corte */ 
@media only screen and (max-width: 600px) {
    main {
        background-color: beige;
    }
    
    section {
        display: block;
    }

    article {
        width: 100%;
    }

    img {
        display: none;
    }

    body {
        font-size: small;
    }
}

@media only screen and (min-width: 600px) {
    main {
        background-color: lightskyblue;
    }

    article {
        width: 50%;
    }
    
    section {
        display: flex;
    }

    img {
        display: none;
    }

    body {
        font-size: medium;
    }
}

/* Tarea: armar punto de corte para escritorio */