As I said, make it fully self-contained without relying on "builds" or any other mumbo-jumbo, the way you would with sphinx or hugo or whatever. Essentially add a new html or markdown file, put whatever you want in it, let's call it "something.md". Then add a link from your index page to "#/something.md" and not deal with builds or styling or whatever, simply commit and move on and have it take care of all the html. And in the case of markdown, parse it and render it as html on the client.