div.redes {
    div {
        background-image: url(../../../img/redes.png);
        border: 1px solid black;
        width: 58px; height: 58px;
        margin: 5px;
    }
    :first-child {background-position: 0px 0px;}
    :first-child:hover {background-position: 0px -57px;}
    :nth-child(2) {background-position: -56px 0px;}
    :nth-child(2):hover {background-position: -56px -57px;}
    :nth-last-child(2) {background-position: -114px 0px;}
    :nth-last-child(2):hover {background-position: -114px -57px;}
    :last-child {background-position: -173px 0px;}
    :last-child:hover {background-position: -173px -57px;}
}