Static files and assets
Any file that isn't a page source and isn't inside a _ folder is copied to the
same path in _public/: photos/cat.jpg is served at /photos/cat.jpg. Files
next to a page in a page folder (about/index.md, about/team.jpg) can be
linked relatively.
The root _assets/ folder is copied verbatim to _public/_assets/. Nothing in
it is ever rendered, even .jsx or .md files, which makes it the place for
CSS, scripts, fonts, and images:
<link rel="stylesheet" href="/_assets/style.css" />
_assets/ folders below the root are not copied. Other _ folders are never
copied in build, though serve can still serve any file from disk.