Astro Big Doc
Astro Theme that can scale for big documentation websites. Includes an unimited depth config menu that starts with a top appbar for sections navigation, then continues on a tree left menu for pages.
Deploy to Netlify
Other themes to consider
Astro Design System & Docs
Astro Design System starter theme is a simple theme to help you document your styleguide, components, patterns and more.
Gate
Static API documentation with Astro and OpenAPI/Swagger.
Manual
A feature full documentation template for Astro.