Still a limited selection of vim webservers though. Have to bump that library size up.

https://iloveemacs.wordpress.com/2016/02/27/writing-web-apps-in-emacs-lisp/

There are several solutions for running a webserver in Emacs like Elnode from Nic Ferrier, httpd.el from Joe Schafer, simple-httpd from Christopher Wellons or Emacs Web Server from Eric Schulte.

And then there's the browser side!

https://www.gnu.org/software/emacs/manual/html_mono/eww.html#Top

EWW, the Emacs Web Wowser, is a web browser for GNU Emacs that provides a simple, no-frills experience that focuses on readability.