HTML & CSS Interview Preparation Guide
Short answer
HTML and CSS are still tested in most frontend interviews — and candidates who only know React often get caught here. Here's what to study.
The topics that come up
Semantic HTML and accessibility (why it matters for a11y and SEO), the box model and box-sizing, the cascade and specificity, Flexbox vs Grid, positioning and stacking contexts (z-index), responsive design (mobile-first, media queries, clamp), and modern CSS (custom properties, container queries, :has()).
How it's tested
Expect 'explain the difference' questions (Flexbox vs Grid, position values, specificity), a small layout task, and reasoning ('why animate transform over width'). Knowing the WHY — accessibility, border-box, why specificity stays flat — is what separates strong answers.
Frequently asked questions
- Is HTML/CSS still asked for React roles?
- Yes. Layout, responsiveness, specificity and accessibility come up regularly — many candidates lose easy points by neglecting them.
- How much CSS depth do I need?
- Solid Flexbox and Grid, the box model, specificity, responsive techniques and accessibility basics cover the vast majority of questions.
This is 1 of 200+ questions in the Complete Frontend Kit
Get every question with detailed answers, follow-ups and real code — plus coding challenges and a last-minute revision sheet. One-time payment, instant access.
⚡ Get the Complete Frontend Kit → ₹499