Fixed Header and Footer HTML table in CRM WebResource

Hi,

We are fetching data from external source and showing it as HTML table in Webresource. Can help me with any reference codes to have fixed header and footer html table in web resource. I tried in separate HTML page, but inside the Iframe it does not work. Please give some examples with fixed header and footer with scroll bars. If we have fixed header it is affecting the scrollbar because iFrame renders default scroll bars but for fixed header and footer we will have another scroll bars.

Thanks.