Removing black text title box from top of each page

What should I do to remove the black text title box that appears on each page. This title box takes up quite a bit of browser space and I'd like to take this title box section out. The CSS ID is gkPageTitle.

Hi,
one of solutions:

h2#gkPageTitle {display:none;}

Thank you for your response. Where (in which file) should I add this override?

Please read: https://www.gavick.com/documentation/jo ... a-template

Thanks!!