That applies a CSS stylesheet to the XML tree directly, which has serious limitations: you can’t make links, you don’t get a document title, you don’t get a use

That applies a CSS stylesheet to the XML tree directly, which has serious limitations: you can’t make links, you don’t get a document title, you don’t get a useful accessibility tree, you can’t change the order of the tree… I would always recommend using an XSL transformation first, in order to avoid these limitations.