15 to 30 random questions in 15 to 30 minutes, by the level you choose: semantics, forms, a11y, specificity, box model, flex, grid, responsive. After you submit you get your score, your strong and weak topics, and the right answer with an explanation for every question.
Want to revise first? Read the HTML and CSS interview questions and answers.
The test covers 13 topics across three levels. Each attempt picks 15 to 30 questions at random, by the level you choose, so every attempt is different.
One question from each level, the way they appear in the test. A new set comes on the 1st of every month. Try it, then open the answer.
Answer: A share of the space left after fixed tracks and gaps. fr means a fraction of the free space. In 200px 1fr 1fr, the 200px column and the gaps are taken out first and the rest is split in two. Unlike percentages, fr tracks do not overflow because of gaps.
Answer: Use a plain img with fetchpriority high and no lazy loading. The LCP image should be found in the HTML and requested early. fetchpriority high raises its priority, while lazy loading or injecting it with JavaScript delays the request and makes LCP worse.
.row { display: flex; width: 1000px; }
.row > div { flex: 0.25 1 300px; }Answer: 400px. When the grow factors add up to less than 1 (here 0.5), an item gets only that fraction of the free space, not all of it. Free space is 400px, so each item grows by 0.25 x 400 = 100px to 400px.
Take the full HTML and CSS mock test: 15 to 30 questions and 15 to 30 minutes, by level.
A question counts as right only when you pick exactly the right option, or all the right options where it says so; a question left blank counts as wrong. Your score is the share of the test's questions you got right (15 to 30, by level). The result also scores every topic, so you know what to revise before the interview.
Yes. The HTML and CSS mock test is free. You need a free CoreHRx Jobs account to start it, so your score and the topics to work on are saved.
It depends on the level: Fresher has 15 questions in 15 minutes, Intermediate has 20 questions in 20 minutes, Experienced has 30 questions in 30 minutes. They are multiple-choice questions picked at random from a larger bank of HTML and CSS questions at your level, so every attempt is different.
The questions cover Performance and Best Practices, Selectors and Specificity, Cascade and Inheritance, Display and Positioning, Flexbox, Accessibility, Forms and Inputs, HTML Structure and Semantics, CSS Grid, Responsive Design, Transitions and Animations, Box Model, Units and Sizing. Your result shows how you did in each topic.
Fresher if you are a student or have less than a year of experience, Intermediate for 1 to 5 years at work, and Experienced for 5 years or more.
Only your best HTML and CSS score, and only when it is 60% or more. It shows on the job applications you send on CoreHRx. Lower scores stay private.
Yes, up to 10 tests a day. Each attempt picks questions you have not seen recently first.