Demo: https://john-doe.neocities.org/
A website in a single HTML file. It simply uses the #anchor suffix and the :target CSS selector to show and hide pages/content. This setup is databaseless, javascriptless, and buildshit-free, so you can edit your website with a text editor and upload it somewhere like a normal person.
To create a new page, add a <section> with a unique id
<section id="contact">
Contact me!
</section>Then you could add a link to it inside <nav>
<a href="#contact">Contact</a>