ibitI built a tax calculator with obsessive provenance — every number sourced to a dated .gov, a human in the loop before anything ships. Then one afternoon of programmatic scaling nearly cost me monetization anyway. Quality in YMYL is judged at a level you don't fully control.
CSS animation isn't faster because the math is cheaper. It's faster because it can run off the main thread entirely — and a JS library that hooks the same engine is just as smooth.
How the light-dark() function and color-scheme collapse the old two-blocks-of-variables dark mode pattern into a single source of truth — including a manual light/dark/system switch.
The new styleable <select> finally lets us build icon-and-swatch dropdowns — and that's exactly the trap. Visual content must be additive, never a substitute for real text.