How do you make a responsive layout in Bootstrap?

Short answer: Use the grid system and responsive classes: <div class="col-12 col-md-6 col-lg-4">Responsive column</div>

Real-world example (ShopNest)

ShopNest’s browser cart uses modern JavaScript: fetch APIs with async/await, modules, and clear error handling.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.