me-retina-query( media = all, density = 1 )
    media = join( " ", media )
    query = media + " and (-webkit-min-device-pixel-ratio: " + density + "), "
    query += media + " and (min--moz-device-pixel-ratio: " + density + "), "
    query += media + " and (-o-min-device-pixel-ratio: " + density + "/1), "
    query += media + " and (min-device-pixel-ratio: " + density + "), "
    query += media + " and (min-resolution: " + ceil( density * 96 ) + "dpi), "
    query += media + " and (min-resolution: " + density + "dppx)"
    @media query
        {block}

retina-query = me-retina-query unless me-no-conflict
me-hidpi-query = me-retina-query unless me-no-conflict
hidpi-query = me-hidpi-query unless me-no-conflict