Styled-components (CSS-in-JS):?

Short answer: CSS-in-JS allows writing actual CSS inside JavaScript files. Supports dynamic styling and theming. import styled from 'styled-components'; const Button = styled.button` background: ${(props) => (props.primary ? 'blue' : 'gray')}; color: white; `; function App() { return <Button primary={true}>Click Me</Button>;

Real-world example (ShopNest)

ShopNest’s storefront is React: components for ProductCard, CartDrawer, and CheckoutForm, with hooks for local UI state.

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.