Need to include PGN (chess game notation) in a post - feature

I am trying to embed a PGN file in a topic. This requires including CSS and Javascript in the topic. Could some one, please help me how can I use CSS and Javascript in a topic

Chess notation - Overleaf, Online LaTeX Editor

I made a simple site that helps players learn and practice algebraic notation : r/chess

Open Multiple Games and Files in New Tabs

Writing a chess program in one day, by Andreas Stöckl

Need to include PGN (chess game notation) in a post - feature - Discourse Meta

Chess By Post Free::Appstore for Android

Chess PGN (Portable Game Notation)

Deception Chess: Game #2 — LessWrong

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iChessOne: First Foldable Electronic Chessboard