Unlocking the Secrets:  CSS Interview Questions Every Web                                    Developer Should Know

Top 10 CSS interview questions

Question 1: What is CSS?

Answer: CSS stands for Cascading Style Sheets. It is a language used to style web pages. CSS allows you to control the appearance of elements on a web page, such as their size, color, and position.

 

Question 2: What are the advantages of using CSS?

Answer: There are many advantages to using CSS, including:

·       It allows you to separate the content of your web page from its presentation. This makes your web pages more maintainable and easier to update.

·       It allows you to create consistent styles across your web pages. This makes your web pages look more professional and polished.

·       It allows you to target specific elements on your web page with specific styles. This allows you to create more dynamic and interactive web pages.

·       It allows you to create responsive web designs that can adapt to different screen sizes. This ensures that your web pages look good on all devices, from desktop computers to smartphones.

 

Question 3: What are the limitations of CSS?

Answer: CSS has a few limitations, including:

·       It can be difficult to master CSS. There are a lot of different CSS properties and selectors, and it can take some time to learn how to use them all effectively.

·       CSS can be slow to load, especially on mobile devices. This is because CSS files are often large and complex.

·       CSS can be difficult to debug. If you make a mistake in your CSS code, it can be difficult to track down the problem.

 

Question 4: How to include CSS in the webpage?

Answer: There are two ways to include CSS in a web page:

·       External style sheet: This is the most common way to include CSS. You create a separate CSS file and link it to your web page.

·       Inline style sheet: This is less common, but it allows you to add CSS styles directly to your HTML code.

Question 5: What are the different types of Selectors in CSS?

Answer: There are many different types of selectors in CSS, but some of the most common ones include:

·       Type selector: This selector selects all elements of a certain type, such as h1, p, or img.

·       Class selector: This selector selects all elements with a certain class, such as .my-class.

·       ID selector: This selector selects a single element with a certain ID, such as #my-id.

·       Attribute selector: This selector selects elements with a certain attribute, such as [href] or [name="my-name"].

Question 6: What is a CSS Preprocessor?

Answer: A CSS preprocessor is a tool that allows you to write CSS code in a more concise and powerful way. Sass, Less, and Stylus  preprocessors

 

Question 7: What is VH/VW (viewport height/ viewport width) in CSS?

Answer: VH/VW are CSS units that represent the viewport height and viewport width, respectively. This means that they will scale with the size of the browser window.

 

Question 8: What is the difference between inline, inline-block, and block?

Answer: Inline, inline-block, and block are all CSS display types. The difference between them is how they are displayed on the web page.

 

·       Inline: Inline elements, like text, are displayed one after the other. They do not take up any extra space on the page.

·       Inline-block: Inline-block elements are displayed one after the other, like text, but they can take up extra space on the page.

·       Block: Block elements are displayed on their own line, and they take up the full width of the page.

Question 9: Is it important to test the webpage in different browsers?

Answer: Yes, it is important to test the webpage in different browsers. This is because different browsers can interpret CSS code differently. By testing the webpage in different browsers, you can make sure that it looks the same in all browsers.

 

Question 10: What are Pseudo elements and Pseudo classes?

Answer: Pseudo elements and Pseudo-classes are special selectors that allow you to style specific parts of an element. Pseudo-elements are used to style parts of an element that do not have a corresponding HTML tag, such as the first letter of a paragraph. Pseudo-classes are used to style elements based on their state, such as whether they are focused or hovered over.