Take this free CSS test online and find out exactly where your CSS knowledge has gaps. 20 exam-style questions covering selectors, Flexbox, Grid, and responsive design — instant readiness score, no sign-up required.
This CSS practice test covers the core CSS topics tested in front-end developer interviews and web certification exams. Questions target selectors and specificity rules, the box model, modern layout systems (Flexbox and CSS Grid), responsive design with media queries, and CSS custom properties. Each question comes with an explanation so you learn why the correct answer is right — not just whether you got it right. Score below 70? Your topic breakdown pinpoints which areas to revise before your interview or exam.
Choose Easy, Medium, or Full test depending on where you are in your learning.
One question at a time. Click an answer and get instant feedback with a full explanation.
See your readiness score (0–100), pass likelihood, and a topic-by-topic breakdown.
Completely free — no account, no credit card, no email required. Pick a difficulty (Easy, Medium, or Hard) and start immediately.
The test covers selectors and specificity, the box model, Flexbox, CSS Grid, responsive design with media queries, CSS variables, positioning, and pseudo-classes. Hard mode includes tricky specificity edge cases and complex Grid layouts.
The full test (Hard mode) has 20 questions across 8 CSS topics. Easy mode covers fundamental selectors and the box model; Hard mode adds Grid, custom properties, and specificity edge cases.
Yes. CSS fundamentals come up in almost every front-end technical screen. This test mirrors the kinds of CSS questions asked at mid-level front-end roles at product companies.
An instant readiness score (0–100), pass likelihood estimate, topic-by-topic accuracy breakdown, and your specific CSS weak areas — so you know exactly what to revise next.
Free. No sign-up. Results in under 20 minutes.