The firefox browser screen hurts the eyes
Long watching time, eye pain Mainly watching videos How to adjust PS: EDGE and GOOGLE are very dark (stable)
All Replies (1)
Type about:addons<enter> in the address bar to open the Add-ons Manager. Hot key; <Control> (Mac=<Command>) <Shift> A)
On the left side of the page, select Appearance or Themes. Then select Default. Now restart Firefox.
If Default does not work for you, try another.
https://addons.mozilla.org/en-US/firefox/search/?q=theme 61,114 results found for "theme"