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CSS3 Interview Preparation Guide: 50 Important Questions

Most Asked Questions Related to Advanced & Miscellaneous in CSS3

  1. Difference between CSS reset and normalize.
  2. What is the difference between inline SVG and background-image SVG in CSS3?
  3. Explain clip-path in CSS3 with an example.
  4. What is the difference between z-index and stacking context?
  5. What are CSS variables (custom properties), and how do you define them?
  6. How can you optimize CSS for better performance?
  7. Explain the difference between absolute, fixed, and sticky positioning.
  8. What is the difference between relative imports (@import) and link tags for CSS?
  9. How do you implement dark mode using CSS3?
  10. What are the differences between CSS Grid, Flexbox, and Float layout techniques?

CSS3 Questions for Responsive Design, Typography, and Effects

  1. What are media queries in CSS3? Provide an example.
  2. Difference between min-width and max-width in media queries.
  3. How do you make a website responsive using CSS3?
  4. What is the difference between em and rem units in responsive design?
  5. Explain viewport units (vh, vw).
  6. How do you add custom fonts in CSS3 (@font-face)?
  7. What is the difference between relative and absolute font sizes?
  8. Explain word-wrap, word-break, and overflow-wrap properties.
  9. How can you make text appear with a gradient color?
  10. Difference between opacity and rgba() in CSS3.

Basic Asked Questions in CSS3, including Colors, Background & Borders

  1. What is CSS3, and how is it different from CSS2?
  2. What are the main advantages of using CSS3?
  3. Explain the difference between inline, internal, and external CSS
  4. What are pseudo-classes in CSS3? Give examples
  5. What are pseudo-elements in CSS3? OR How are they different from pseudo-classes?
  6. What new color features were introduced in CSS3? (RGBA, HSLA)
  7. How do CSS gradients work? Difference between linear and radial gradient
  8. How can you create rounded corners in CSS3?
  9. Explain multiple background images in CSS3
  10. How can you add shadows to text and boxes in CSS3?

Questions Related to Selectors, Units, Flexbox, Grid Layout, Transitions & Animations

  1. What are attribute selectors in CSS3? Provide examples.
  2. Difference between nth-child() and nth-of-type().
  3. Explain relative units in CSS3 (%, em, rem, vh, vw).
  4. What is the difference between absolute, relative, fixed, and sticky positioning?
  5. Explain the difference between inline, block, inline-block, and flex elements.
  6. What is Flexbox in CSS3, and why is it useful?
  7. Explain justify-content, align-items, and align-content in Flexbox.
  8. Difference between relative, absolute, and flex positioning.
  9. What is CSS Grid? How does it differ from Flexbox?
  10. Explain the difference between grid-template-rows and grid-template-columns.
  11. What is the difference between CSS transitions and CSS animations?
  12. Explain the properties transition-property, transition-duration, and transition-timing-function.
  13. What is @keyframes in CSS3? Provide an example.
  14. How do you create a fade-in or fade-out effect using CSS3?
  15. What is the difference between animation-fill-mode: forwards and backwards?

Top 5 Most Asked Questions Related To Transforms

  1. What are 2D transforms in CSS3? Provide examples such as translation, rotation, scaling, and skewing.
  2. What are 3D transforms in CSS3? Give examples.
  3. Explain the difference between transform: translate() and position: relative.
  4. How do you create a flip card effect using CSS3?
  5. What is transform-origin, and how is it used?

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