Why does have an extra line under the image?

Why does my <asp:image> show a line at the very bottom? How do i get rid of it?


     
         <itemtemplate>
               <asp:HyperLink ID="ImageHyperLink" NavigateUrl='<%# "DetailsPage.aspx?IDValue=" +DataBinder.Eval(Container.DataItem, "ID")%>' runat="server"> <%# DataBinder.Eval(Container.DataItem, "Jewelry Type") %>            
                  <asp:Image ID="Image1" runat="server" ImageUrl="~/Im ...