As mentioned by chrismorgan, internetter, miduil, and others, CSS can be used to style XML without XSL transforms and is much more performant. The first time I

As mentioned by chrismorgan, internetter, miduil, and others, CSS can be used to style XML without XSL transforms and is much more performant. The first time I saw this in the wild was the United States Legislative Markup (USLM) XML used by the US government, it can style large documents that their previous XML format with XSLT would choke on.[1] It's always interesting when government is more cutting edge than experimental stuff on the Web. It would be nice to get some standardized, basic CSS going for Atom feeds that anyone can link to and just works. [1] https://www.govinfo.gov/features/beta-uslm-xml https://www.govinfo.gov/features/beta-uslm-xml