center gridview

i have all this to try to center the gridview but in chrome it does not center, havent test on FF but on IE it works fine, so what i'm missing for chrome.
<asp:GridView ID="GridView2" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" CellPadding="4" DataKeyNames="ID" DataSourceID="SqlDataSource1" ForeColor="#333333" GridLines="None" HorizontalAlign="Center" OnRowDeleting="GridView2_RowDeleting" OnRowDataBound="GridView2_RowDataBound" OnRowUpdating="GridView2_RowUpdating" PageSize="5" OnRowDeleted="GridView2_RowDeleted"> <RowStyle BackColor="#EFF3FB" HorizontalAlign="Center" VerticalAlign="Middle" />