Add dark mode and automatically fit users' system/browser mode#27

JocelynYZAX wants to merge 1 commit intoInvolutionHell:mainInvolutionHell/involutionhell:mainfrom

JocelynYZAX:feat/dark-mode-toggleJocelynYZAX/involutionhell.github.io:feat/dark-mode-toggleCopy head branch name to clipboard