At present this is an old static site published to a gh-pages branch on Github.
In order to make it easy to replace this site with a modern Vue/Nuxt or SvelteKit site, I've placed the old HTML into a static subfolder /static/html
To browse the site locally, simply open the index file /static/html/index.html
To deploy changes, simply commit and push to the repository, then use the npm script (defined in the package.json):
npm run deploy
This script pushes the /static/html folder to the gh-pages branch on Github, updating the public website.
The first time you do this, you will first need to install the npm script with npm i