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.