section footer 1

Hello, I hope you are very well. I have this query if you can help me:

place a button on the footer that says “more information” and has a script to hide / show content. ( https://ibb.co/NsbP0Kb )

the content that I want to hide or show is the first section of the footer.

Could you please tell me which template I have to edit? I want to cancel it in my son theme.

I saw that footer-sml-layout.php contains section-1 of the footer but it doesn’t work for me there. Well, I appreciate if you can provide me with some more specific information, I do not have knowledge, I am only applying the codes that I find on the Internet

From already thank you very much. I await your response

The page I need help with: [log in to see the link]