How to eliminate a line in a GridView ?

HI

I want to eliminate an empty line that appears at the top of a bounded GridView, how to do that?
Please notice the graphic at the top of the gridview and the empty space between them.

I have attached the code and an image for a better understanding.

Thanks

<asp:GridView runat="server" 
                ID="gvProductos"
                AutoGenerateColumns="False"
                RowStyle-CssClass="LineaDeContenidoCarrito" CellPadding="5"
                AllowSorting="True" 
                DataSourceID="odsCarrito" 
                DataKeyNames="Id_Producto" 
                OnRowDataBound="gvProductos_RowDataBound"
                ShowFooter="true">
                <columns>
                    <asp:TemplateField>
                        <ItemTemplate>
                            <asp:TextBox id="tbCantidad" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Cantidad") %>' Width="72"></asp:TextBox>
                        </ItemTemplate>
                    </asp:TemplateField>                
                    <asp:BoundField DataField="Codigo" ItemStyle-Wrap="false" ItemStyle-Width="68" ReadOnly="true"  ></asp:BoundField>
                    <asp:BoundField DataField="Titulo" ItemStyle-Wrap="false" ItemStyle-Width="206" ReadOnly="true"></asp:BoundField>
                    <asp:BoundField DataField="PrecioLista" ItemStyle-Wrap="false" ItemStyle-Width="97" ReadOnly="true" HtmlEncode="false" DataFormatString="{0:C2}" ItemStyle-HorizontalAlign="Right"></asp:BoundField>
 
                    <asp:TemplateField ItemStyle-Wrap="false" ItemStyle-Width="100" ItemStyle-HorizontalAlign="Right">
                        <ItemTemplate> 
                          <asp:Label ID="lbSubtotal" Runat="Server" 
                                     Text='<%# String.Format("{0:C2}", Eval("Cantidad") * Eval("PrecioLista")) %>' />
                        </ItemTemplate>
                    </asp:TemplateField>
 
                    <asp:CommandField ItemStyle-Wrap="false" ItemStyle-Width="35"
                        DeleteText="Delete"
                        ShowDeleteButton="True"/>
                    
                    <asp:TemplateField ItemStyle-Wrap="false" ItemStyle-Width="60" ItemStyle-HorizontalAlign="Center">
                        <ItemTemplate> 
                            <asp:LinkButton ID="lbActualizar" runat="server" text="Update" CommandName="Update"/>
                        </ItemTemplate>
                    </asp:TemplateField>
 
                </columns>
 
                <RowStyle CssClass="LineaDeContenidoCarrito" />
                <FooterStyle CssClass="LineaDeTotalesCarrito" />
                <EmptyDataTemplate>
                    <span class="AreaVaciaCarrito">
                        <% DeshabilitaLinks()%>
                        ¡ Empty Shopping Cart ! <br /><br /> 
                    </span>
              </EmptyDataTemplate>
  
            </asp:GridView>

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