My point is that HTML and CSS rarely is &quot;source code&quot; these days, (i.e. &quot;the preferred form for modification&quot;) but the output of a tool. Back when we were using assemblers instead of compilers, assembly was considered source code, but now it&#x27;s an opaque object. It is most HTML and CSS these days: opaque objects. If nothing else, the identifiers and CSS selectors can be easily obfuscated.