Change ASP.Net LinkButton color when clicked in ASP.Net

HI

I have repeater in my page that I use Link button on it

this repeater show datalist page number...

I change linkbutton color with css now I want when click on Linkbutton after click on it ,linkbutton color's change how I can do it?

  <asp:Repeater ID="rptPager" runat="server">
                            <ItemTemplate>
                                <asp:LinkButton ID="lnkPage" runat="server" Text='<%#Eval("Text") %>' CommandArgument='<%# Eval("Value") %>'
                                    Enabled='<%# Eval("Enabled") %>' OnClick="Page_Changed" CssClass="LBR"></asp:LinkButton>
                            </ItemTemplate>
                        </asp:Repeater>

css

.LBR
{
 
    color:black;
     font:bold 12px Tahoma;
   
    }
    

Best Regards