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 By Post Free::Appstore for Android

Chess PGN (Portable Game Notation)

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I played an OTB game with my friend and want to analyse it, chess.com is refusing to show the game accuracy, why is this? : r/chess

Chess PGN (Portable Game Notation)

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