datatable excel export, how can we apply multiple styles to same cell

datatable excel export, how can we apply multiple styles to same cell , currently it overwrites the old style.
$('row c[r*="G"]', sheet).attr('s', '52');

            $('row c[r*="2"]', sheet).attr('s', '50');
            $('row c[r*="3"]', sheet).attr('s', '50');