RTS Questionnaire · Question 23 of 52 · file: answers/q23.html
How have you handled responsive design and differences in UI behavior across different viewports?
ResponsiveFrontendUX
✅ My approach separates three concerns: layout adaptation, behavioural adaptation and performance per viewport.
🧪 Interactive proof: this answer has its own page with a live responsive-strategy workflow, the adaptive shell code and device matrix behind it and the acceptance criteria — open the Q23 responsive-strategy proof →
Technical detail
- 📐 Layout — mobile-first CSS with a documented breakpoint scale, fluid grids and space tokens, container queries for reusable components, and progressive enhancement so the smallest viewport gets the simplest correct structure.
- 🧠 Behaviour — beyond CSS, I change component behaviour with Angular CDK
BreakpointObserveror a responsive service: navigation collapses to a drawer, tables switch to card lists, secondary panels become routes/modals on mobile, and heavy widgets (charts, maps) mount only when the viewport and connection can afford them. - 🔁 State consistency — the same feature state drives every viewport, so switching devices mid-flow (or rotating a tablet) preserves context instead of resetting the user journey.
- ⚡ Performance — lazy-loading heavy components on small screens, virtual scrolling for long lists,
@deferblocks and code-splitting, responsive images and avoiding layout thrashing; trends are measured with Lighthouse and real-user metrics. - ♿ Accessibility and input — keyboard, touch and pointer parity, focus management in overlays, and contrast/typography that hold up at every density.
🧪 Finally, I encode the rules: a living style guide plus visual/regression checks in CI, so future contributions respect the responsive contract instead of re-inventing it per screen.
🧾 CV evidence: 2025 CV: advanced responsive UI and accessibility expertise; Angular CDK/Material delivery; performance-tuning competency listed in the CV architectural section.