CSP for Pharaoh CSS: a real before-and-after case study

I’ve seen the same pattern over and over: a team adopts a utility-first CSS framework, ships fast, then bolts on CSP later and wonders why the site breaks in weird places. Pharaoh CSS is no exception. The good news is that CSS-heavy sites are usually easier to lock down than JavaScript-heavy apps. The bad news is that most teams still start with a lazy policy like style-src 'unsafe-inline', leave it there forever, and call it “good enough”. It usually isn’t. ...

April 11, 2026 · 7 min · headertest.com