<asp:gridview ID="Gridview1" runat="server">
<AlternatingRowStyle CssClass="" />
<EditRowStyle CssClass=""/>
<FooterStyle CssClass=""/>
<HeaderStyle CssClass=""/>
<PagerStyle CssClass=""/>
<RowStyle CssClass=""/>
<SelectedRowStyle CssClass=""/>
</asp:gridview>
Create css for each of the above sections and apply