How to create page like this?

This page is built using Nextra (repo here ), a Next.js and MDX powered, no-code site generator by @shuding  and @pacocoursey  at Vercel .

It comes with two themes: docs (nextra-theme-docs) and blog (nextra-theme-blog). This site you are seeing is using nextra-theme-docs.

Follow these instructions to get started making your own.