A large horizontal slice of Firefox Devtools. The `html` element is selected, and in the Computed style tab, the color + background-color rules are expanded to show the style rule and where it came from. When there are conflicting rules, the overridden ones appear crossed out.
https://functional.cafe/system/media_attachments/files/113/646/427/020/615/374/original/45de2df9fef50108.png