a.menu-icon-3,
    ul.links li.menu-icon-3 a,
    ul.menu li.menu-icon-3 a {
        background-image: url(/sites/default/files/menu_icons/icn-facebook.svg);
        padding-left:px;
        background-repeat: no-repeat;
        background-position: left center;
    }
    a.menu-icon-21,
    ul.links li.menu-icon-21 a,
    ul.menu li.menu-icon-21 a {
        background-image: url(/sites/default/files/menu_icons/icn-instagram.svg);
        padding-left:px;
        background-repeat: no-repeat;
        background-position: left center;
    }
    a.menu-icon-22,
    ul.links li.menu-icon-22 a,
    ul.menu li.menu-icon-22 a {
        background-image: url(/sites/default/files/menu_icons/icn-twitter.svg);
        padding-left:px;
        background-repeat: no-repeat;
        background-position: left center;
    }