Top 40 CSS Interview Questions You Should Know

Hiring managers expect a mastery of these topics even for the most junior developers, which is why it is so important to be prepared to answer CSS interview questions when they are asked. There are some topics like React.js and MySQL that are perfectly acceptable to be mastering even as a mid- or senior-level developer. However, HTML and CSS are not some of those topics. We hope you enjoy our list of some common technical questions that you should be prepared to answer during your next interview.

What does the acronym CSS stand for?

Cascading style sheets are the words used to make up the acronym CSS. Before CSS, most styling was contained within the HTML tags of the document. CSS lets you describe the design, layout, and style of the HTML document.

Why is the word “cascading” very important in CSS?

CSS follows an order of importance. By default, what is most important is what was mentioned first in the program. Therefore, instructions cascade downward by importance, much like a waterfall. That cascade can be overwritten by selecting an element and applying unique styling. For example, if you first apply a background color of “red” to an HTML page and then later give it a background color of “blue”, then the background color will be the value that came last – “blue” – as the programming cascades downward. 

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