This website is fully done in plain HTML/CSS/JavaScript with no server side language. It's supposed to be an easy template to add new pages to.
To test locally you can either put this folder in an apache server or you can run a development server with the http.server python module (python -m http.server PORT) or with PHP (php -S 0.0.0.0:PORT)
To format the code it is recommended to run npm run format as this will use Prettier and the configuration set in package.json to format all the code in this repo.