Accordion menu in footer-Flex theme

[MrsMacca]

Hi all. Would anyone know how to make the menus in the Flex theme footer accordion style on mobile, it's far too lengthy, but ok on desktop.

Thankyou.

[MrsMacca]

Unfortunately, this has done nothing. My theme doesn't have footer.liquid, but had footer-classic.liquid ( i am using the classic style footer) and footer_menu.liquid. I tried the codes in both of these, but hasn't worked