The easiest path to GDPR compliance: switch to a completely static website with no javascript, CGI, or CSS, and rotate the logs daily.

Bad idea of the day: an extension that disables all CSS on all pages, and then allows you to approve rules one by one, or edit them in place

70% Repetition in Style Sheets: Data on How We Fail at CSS Optimization · Jens Oliver Meiert https://meiert.com/en/blog/70-percent-css-repetition/

How to Make a Mobile-Friendly Website: Responsive Design in CSS ⌘ https://www.thesitewizard.com/css/mobile-friendly-responsive-design.shtml

Query unused CSS rules on current document state: https://www.codemadness.org/query-unused-css-rules-on-current-document-state.html

CSS Frameworks + CSS Reset: Design From Scratch http://tinyurl.com/29n97c