1) Establish containment early
Mark meaningful layout regions with container-type: inline-size (or size when height matters). Without a typed
container, @container rules simply never fire the way you expect.
2) Name containers when you nest them
Deep UIs stack cards inside sidebars inside modals. Use container-name so each query targets the right box and you avoid
accidental coupling between unrelated regions.
3) Pair with tokens, not magic numbers
Prefer clamped spacing and typography tokens inside @container breakpoints. The goal is fewer one-off pixels and more
predictable reflow when marketing drops a new banner above your component.
4) Performance mindset
Browsers are fast, but excessive nesting still costs. Keep your deepest container trees shallow, and reserve fine-grained queries for high-impact components (heroes, data tables, commerce cards).