Is there a tool that preserves CSS formatting during HTML to PDF conversion?

I tried the options in https://unix.stackexchange.com/questions/662801/is-there-a-script-or-tool-that-converts-html-to-pdf with command: pandoc documentation.html -o test.pdf --pdf-engine=xelatex but unfortunately they do not preserve the CSS formatting. For example I have this document that looks like this : --- but the resulting pdf output looks plain like this without css formatting. Notice that the header with blue background is gone and all the other formatted texts no background css.