Welcome to the year 2023, As you have already noticed, the world of web development is constantly advancing. As a result The demand for skilled web developers only continues to grow.

I remember when I first started learning CSS back in 2019. And as the years went by, I realized that CSS is vast.

Here are the 10 advanced CSS interview questions

Advance CSS Interview Questions

1. How would you implement a responsive grid system using CSS grid or flexbox?

To implement a responsive grid system using CSS grid or flexbox, we can define a grid or flex container with the desired number of columns or rows, and set the width or height of each item using percentage-based values. You can also use media queries to adjust the grid or flex properties based on screen size.

2. What is the difference between display:none and visibility:hidden?

display:none removes that element from the document, but visibility:hidden only hide that element, It still takes space in the layout.

3. What is the box model in CSS?

The box model in CSS defines the size and layout of elements on a webpage. It includes the content, padding, border, and margin of an element.

4. How would you create a CSS-only dropdown menu?

We can use the nested lists with a checkbox to create a CSS-only dropdown menu. By using the :checked CSS pseudo-class we can expending the dropdown menu.

Also Read - Effortlessly Create Drop Downs with Bootstrap

5. Can you explain the difference between absolute, relative, fixed, and sticky positioning in CSS, and give an example of when you would use each one?

Absolute positioning positions an element relative to its nearest positioned ancestor, while fixed positioning positions an element relative to the viewport. Relative positioning positions an element relative to its normal position in the document flow, while sticky positioning is a hybrid of relative and fixed positioning that allows an element to stick to the top or bottom of the viewport as the user scrolls. Use absolute or fixed positioning for elements that need to be fixed in a certain position, and use relative or sticky positioning for elements that need to be positioned relative to their normal flow.

6. How would you implement CSS animations or transitions to create engaging user experiences?

To implement CSS animations or transitions, you can use the animation or transition properties with the desired timing function, duration, and delay values. You can also use keyframes to define the different stages of animation. It’s important to consider performance and accessibility when using animations and to provide fallbacks for users who don’t support CSS animations.

7. What is the z-index property in CSS?

The z-index property in CSS determines the stacking order of positioned elements on a webpage.

8. How would you implement a responsive typography system that adjusts font size and spacing based on screen size?

To implement a responsive typography system, you can use relative font sizes (em, rem, vw) and line-height values, along with media queries to adjust the font size and spacing based on screen size. You can also use CSS variables to define the font size and spacing values in a more modular and maintainable way.

9. How to override an inline CSS rule with an external CSS rule?

We can override an inline CSS rule with an external CSS rule by using the !important keyword with the external CSS rule.

10. What is the CSS float property?

We use the CSS float property to position an element right or left to its container allowing the text to wrap around it.

Conclusion

So those are the 10 advanced CSS interview questions that I think will come in handy in your next interview.