How to add space between menuitems

<asp:Menu ID="menuNumeric" runat="server" CssClass="pagerFont" Orientation="Horizontal" OnMenuItemClick="menuNumeric_Click" Visible="true">                                                            

//code file
protected void grVwProductionOrderSearch_OnDataBound(object sender, EventArgs e)
    {
        Menu menuNumeric = (Menu)PagerPO.FindControl("menuNumeric");
        menuNumeric.Items.Clear();


        int startIndex = ((PagerCurrentIndex / PagerDisplayCount) * PagerDisplayCount) + 1;
        int maxIndex = startIndex + PagerDisplayCount;

        for (int i = startIndex; i < maxIndex; i++)
        {
            MenuItem item = new MenuItem();
            item.Text = " " + i.ToString() + " ";
            item.Value = i.ToString();

            if (grVwProductionOrderSearch.PageIndex == i)
            {
                item.Selected = true;
                PagerCurrentIndex = i;
            }
            menuNumeric.Items.Add(item);

        }
    }