Does someone know how I can make a widget that toggles a dark mode on for a specific section?

[NickolasDB]

Hi,

I've been trying to create a similar widget like the one you can see on: 'panerai.com/be/en/collections/watch-collection/submersible/pam01209-submersible-azzurro---42mm.html'
However, I have not yet been successful at recreating a similar widget. Could someone point me in there right direction?

Kind regards,
Nickolas