🎨 Ultimate Guide: CSS Interview Questions and Answers (2025 Edition) - Part 2

Continuing from Part 1, here are more advanced CSS interview questions to help you solidify your knowledge and ace your front-end developer interviews. 📌

Let's get started! 🚀

🟢 Advanced CSS Interview Questions

1. What is the difference between grid-template-areas and grid-template-columns?

• grid-template-areas: Defines named grid regions for layout organization.
• grid-template-columns: Specifies the size of each grid column.

Example:

.container {
  display: grid;
  grid-template-areas: "header header" "sidebar main";
  grid-template-columns: 200px 1fr;
}

2. How do you create a sticky footer with CSS?

html, body {
  height: 100%;
}
.wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.footer {
  margin-top: auto;
}

3. What is the clip-path property in CSS?

It defines a visible portion of an element.

.element {
  clip-path: circle(50%);
}

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

.nav ul {
  display: none;
  position: absolute;
}
.nav:hover ul {
  display: block;
}

5. What is the difference between :nth-child() and :nth-of-type()?

• :nth-child(n): Selects the nth child of any type.
• :nth-of-type(n): Selects the nth child of a specific type.

6. How can you create a responsive typography system?

html {
  font-size: clamp(1rem, 2vw, 2rem);
}

7. What is the purpose of object-fit and object-position in CSS?

• object-fit: Defines how an image or video fits inside a container.
• object-position: Adjusts the position of the media within the container.

Example:

img {
  object-fit: cover;
  object-position: center;
}

8. How do you implement aspect ratio in CSS?

.aspect-ratio {
  aspect-ratio: 16 / 9;
}

9. What is backdrop-filter and how does it work?

It applies graphical effects to the background behind an element.

.blur-background {
  backdrop-filter: blur(10px);
}

10. How can you prevent layout shifts in CSS?

• Use width and height attributes on images.
• Use min-height for dynamic content.
• Use aspect-ratio to maintain proportions.

11. What are the differences between hover, focus, and active states?

12. How can you create a smooth scrolling effect using CSS?

html {
  scroll-behavior: smooth;
}

13. What is the difference between contain and cover in background-size?

• contain: Ensures the entire image is visible within the container.
• cover: Ensures the image covers the entire container, possibly cropping it.

14. How do you apply styles conditionally using CSS?

• Using attribute selectors:

input[disabled] {
  background-color: gray;
}

• Using media queries:

@media (max-width: 600px) {
  body {
    background-color: lightblue;
  }
}

15. What is the difference between inline, block, and inline-block elements?

🎯 Final Thoughts

With these additional CSS interview questions, you’ll be well-prepared for front-end development interviews! Keep practicing and experimenting with CSS to build modern and efficient layouts. 🚀

💬 Got more questions? Drop them in the comments! 👇