It is also all custom: https://github.com/esbuild/esbuild.github.io https://github.com/esbuild/esbuild.github.io. YAML files that get converted to plain static

It is also all custom: https://github.com/esbuild/esbuild.github.io https://github.com/esbuild/esbuild.github.io. YAML files that get converted to plain static HTML pages. It's designed to work well without any JavaScript. Even the animated graphs on the home page are done without JavaScript.