CSS3 interview questions and Answers

Last updated on Feb 07, 2024
  • Share
CSS3 interview questions

It is a simple yet advanced design language aimed to simplify the process of making web pages more presentable. As it handles the look and feels of web pages, users can control text color, font style, layout for paragraphs & columns, layout designs, display variation for different devices and screen sizes, and plenty more. We will discuss a set of most interviewer asked CSS3 interview questions further here for your acknowledgment. As it’s easy to learn but offers powerful control over the HTML document presentation, most of the online businesses are hiring CSS experts to manage their HTML web pages exclusively.

Most Frequently Asked CSS3 interview questions

Here in this article, we will be listing frequently asked CSS3 interview questions and Answers with the belief that they will be helpful for you to gain higher marks. Also, to let you know that this article has been written under the guidance of industry professionals and covered all the current competencies.

Q21. What are the different web fonts formats in CSS?
Q22. What is the syntax of opacity in css3?
Q23. Who is the founder of CSS & when CSS3 released?

CSS is founded by Hakon Wium Lie and first released on December 17, 1996, as an official World Wide Web Consortium. CSS3 is the most advanced version of CSS and was released in June 1999.

Q24. What are the different types of style sheets?
There are three types of CSS available for users as following,
  • Inline CSS: It contains CSS property in the body section attached with the element.
  • Embedded CSS: Used to style a single HTML document uniquely.
  • External CSS: It contains separate CSS files which contain only style property with the use of tag attributes.
Q25. What are the media types?
It has a total of 10 media types supported it. Here are those:
  • All - Intended for all devices
  • Braille - Braille tactile feedback devices
  • Aural – Used for speech synthesizers
  • Embossed – Used for paged Braille printers
  • Print – Applies for printed documents
  • Handheld – Applies for handheld devices
  • TTY – Used for media including a fixed-pitch character grid
  • TV – Used for television-type devices
  • Screen – Required for computer screens
  • Projection – Used for projected presentations
Q26. Explain CSS3 Selectors.

CSS3 selector is a part of the CSS3 rule set that selects the content that the user wants to style.

There are different types of selectors available in CSS3.
  • Universal Selector
  • ID Selector
  • Element Type Selector
  • Class Selector
  • Chile Combinator
  • Descendant Combinator
  • General Sibling Combinator
  • Adjacent Sibling Combinator
  • Attribute Selector
  • Pseudo-element
Q27. How to create rounded corners?

The border-radius property is used to give any element rounded corners. This property defines the radius of an element’s edge.

  • top-left corner, top-right corner, bottom-right corner, and bottom-left corner (Use of four values)
  • top-left corner, top-right, and bottom-left corners, and bottom-right corner (Use of three values)
  • top-left and bottom-right corners, and top-right and bottom-left corners (Use of two values)
  • The value applies for all four corners equally
Q28. How we can add border to a image?

Users have to apply the border-image property to specify the image to be used as the border around an element.


img {
   border:1px solid #021a40;

Q29. List some css3 new style properties?

CSS3 has plenty of new style properties in addition to it. Box-shadow: Used to effect the surround item containers on a webpage.

  • The rounded corner effect
  • Text shadow effect
  • Background gradient effect
Q30. What is gradient and explain its types?

In CSS3, gradients let users display smooth transitions two or number of specified colors.

CSS defines two types of gradients, which are:
  • Linear Gradients: It goes up/down/right/left/diagonally
  • Radial Gradients: Usually defined by its center
  • Saves time with web designing and development
  • Easy to maintain and superior to HTML
  • Better device and browser compatibility

Let’s discuss best interview questions on CSS3 prepared by industry niche experts for your acknowledgment. These CSS3 interview questions are suitable for experienced as well as beginners.

As web design plays a vital role these days to draw some potential customers, it enhances not only the look and feel of a website but also magnets more numbers of clients and eventually better ROI.

Reviewed and verified by Umesh Singh
Umesh Singh

My name is Umesh Singh having 11+ experience in Node.JS, React JS, Angular JS, Next JS, PHP, Laravel, WordPress, MySQL, Oracle, JavaScript, HTML and CSS etc. I have worked on around 30+ projects. I lo...