I think instead of relative paths, link to assets like this — this makes it way easier to just copy the html from the docs, instead of manually having to hunt down asset links and replacing them.
<link rel="stylesheet" href="https://esm.sh/jsr/@celine/celine@4.1.0/cell.css" />
<link rel="stylesheet" href="https://esm.sh/jsr/@celine/libertine@9.1.0/libertine.css" />