Answer 1

Or I guess if you have the knowledge you could find a library which allows you to write desktop applications with HTML and CSS for layout. I know this can be achieved with some node.js solutions.

If its desktop development you’re aiming at.

Answer 2

You can do it if your server runs C++ and then serve HTML and CSS files. This can be achieved with e.g. https://github.com/azadkuh/qhttp