This site is
Everything, the web page, forum, mobile site on this site is hosted on a the same raspberry Pi 4.
This is intended as a proof of concept.
It runs lighttpd, mariadb(mysql) for the forum, Php 7,
even pi-hole for local DNS filtering and lightening fast requests.
The site was writen in notepad++ in HTML with some PHP
("include" fonction mainly) to share menus across pages.
The site weight about 40 KB ! + the Forum & Database
You can see the php live output here PHP Info