Button in page in tagDiv composer

Hi,
I have to add buttons to our medician pages (simple buttons like SUBMIT button in the bottom of this page).
Using tagDiv composer, column text object, edit content. I’m tring make a (internal) link a button with “Format > Button > Default – Normal” that in plain text become:
<h4><span class="td_btn td_btn_md td_default_btn" style="color: #ffffff;">Articoli di questo autore</span></h4>

But it doesn’t work (see that pag. http://91.197.229.197/~uroblogi/mauro-cozzolino/ )

Where is the best method to implement a button (link to internal site page) in Newspaper?

Thans
Regards
Dr. A. Cocci

Strange: executing the same steps in a different order it doesn’t work.
Bu in the correct order how-to above works well!
Thanks
Dr. Cocci