I'm a big fan of using this kind of thing at work. Rather than setting up a web server or packaging something into an installer, I just pop the bundled HTML file on a shared drive.

The CDN approach works, but I don't love depending on some third-party service just so your app continues working. Instead, I like using vite with vite-plugin-singlefile. This lets you package your JS and CSS into a single HTML: https://www.npmjs.com/package/vite-plugin-singlefile