This repository generates HTML slides from a Markdown file (index.md) using reveal.js and pandoc. You can see the slides here. Whenever the source file changes, a GitHub Action updates the slides automatically.
If you want to make your own slides on GitHub, you can fork this repository. You may want to change the name of the repository. Make sure to check the GitHub Pages section of the settings of your repository. Choose the gh-pages branch from the source menu. If everything goes well, you will see the address of your GitHub page. It should be like: yourprofilename.github.io/your-repo-name.