CSS interview questions will cover CSS technology being developed in 1997 by the W3C or the World Wide Web Consortium to streamline the webpage styling using a separate suite of tools and technology. CSS is used by web developers to create, define and improve the appearance and visualisation of webpages. Till the introduction of CSS, the structure and content of the code of a website were not separated.The present-day versions of CSS are the CSS1, CSS2, CSS2.1, CSS3 and CSS4.

CSS interview questions also focus on the separation of style and structure by CSS, which allows HTML to do the markup of the content without worrying about how the page “looks and feels” or the layout and design of the page. This is achieved in 3 ways of integrating CSS styles and a favourite for HTML and CSS interview questions. One can use the HTML page head section to integrate the style-tags or use in-line styling. One can also use the link tag to the HTML page when using a separate written CSS file.

CSS has a cascading nature important in the CSS interview questions, and hence one can cascade it in 3 ways. One can use this important CSS property of CSS style on multiple elements to achieve a style or use multiple styles on the chosen HTML element to achieve a unique and new style or use a style sheet to produce multiple HTML pages with the same template styling.

  1. List of interview questions
  2. Easy list of questions
  3. Intermediate level questions
  4. Advanced level of questions

1. List of interview questions

CSS, or the acronym for Cascading Style Sheets, is the CSS interview questions technology that in modern times is used most in web-design. It makes the pages one works on attractive, well-designed and stylish. Thus most organisations prefer persons with experience in CSS and ask Javascript interview questions, SASS interview questions and answers for CSS3 interview questions. This list of CSS interview questions is designed to help one revise the important concepts behind CSS. 

As usual, the CSS interview questions databank has been divided into 3-divisions, namely the easy, intermediate Vmax interview questions and advanced CSS interview questions, so both the experienced and beginners benefit. As with the interviewer, CSS interview questions normally start with basic questions about its advantages, uses, definitions, installation, etc. Once through this set, the level of difficulty in answering the questions etc., are increased to match the interviewee’s knowledge on HTML and CSS and the more advanced versions in the industry today and more. Always answer the questions crisply and to the point. Here’s our list of 50 questions to help one prepare for the interview.

2. Easy list of questions

  1. Explain CSS full form and history. 
  2. Why and when was CSS developed?
  3. Explain the versions of CSS and their development.
  4. Explain the ways of integrating the HTML page and CSS.
  5. Explain the cascading of style sheets in CSS.
  6. What are the CSS advantages when in use?
  7. Explain are the CSS disadvantages faced in use.
  8. Which are prominent frameworks in CSS?
  9. Explain is the differences between the usage of a Class and an ID.
  10. What is meant by the CSS cascading property? 
  11. What is the history of CSS? 
  12. How does CSS help in complex web designing? 
  13. What are the effects of CSS on vertical control?

3. Intermediate level questions

  1. How many ways can one assign a CSS element a certain colour?
  2. Explain the different elements in the Box Model of CSS.
  3. What is meant by the CSS z-index? 
  4. Explain CSS Sprites. 
  5. What benefits do CSS Sprites bring in?
  6. What is meant by CSS pseudo-elements?
  7. How can one use the same styling when targeting an h3 and h2?
  8. Where is the CSS float property used?
  9. Explain are the various modules in the current CSS version.
  10. What are the types of media in CSS?
  11. Explain the different CSS units.
  12. How is image repetition controlled by CSS?
  13. Explain the CSS writing general nomenclature.
  14. Explain what the CSS code { margin: 0 auto; } will do to an element. 
  15. Explain where the CSS overflow property is used.
  16. Explain the controlling property used for image-scroll.
  17. Explain what is meant by a responsive web design.
  18. Explain the differences between {display: none} and {visibility: hidden}. 
  19. What is meant by the CSS concept of specificity?
  20. How is the CSS box-shadow used?
  21. Explain what is meant by contextual selectors.
  22. How does one have rounded corners when styling an element or image?

4. Advanced level of questions

  1. Explain the CSS flexbox.
  2. How does the choice of browser determine the matched CSS selector elements?
  3. How does one use for absolute positioning the translate () option? 
  4. Explain the approach differences for mobile-first strategy when designing responsive websites? 
  5. Explain how to position a certain CSS element in different ways.
  6. Explain the working of the Block Formatting Context.
  7. Explain what this code {box-sizing: border-box;} does.
  8. Explain the CSS pre-processor and when it is used in projects.
  9. Explain differences between a fixed, relative, statically positioned and absolute elements.
  10. Explain Vendor-Prefixes? 
  11. Explain with an example of how to use CSS counter-reset and counter-increment when automatically creating numbering of webpages.
  12. Explain when file splitting is used.
  13. Explain the differences in mixins/ functions.
  14. Explain the working of CSS working under the hood. 
  15. How does one optimize prints for a particular webpage?


The list of CSS interview questions draws out that CSS has many advantages for web developers as they can control styling in multiple documents from a single website, create classes of documents using multiple HTML elements, and group methods, selector and styles for complex web designing. 

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