CSS Interview Questions and Answers for experienced

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100 CSS Interview Questions and Answers

  1. What is CSS and why is it important?

    • Answer: CSS stands for Cascading Style Sheets. It's a stylesheet language used to describe the presentation of a document written in a markup language such as HTML. It's crucial because it separates content (HTML) from presentation (styling), making websites easier to maintain, update, and ensure consistent branding across different pages. It enables control over visual aspects like colors, fonts, layout, and responsiveness.

  2. Explain the box model in CSS.

    • Answer: The box model is a fundamental concept in CSS. Every HTML element is treated as a rectangular box composed of: content (the actual text or image), padding (space between content and border), border (a line around the padding), and margin (space between the border and other elements). Understanding the box model is vital for accurate layout and spacing.

  3. What are the different ways to include CSS in an HTML document?

    • Answer: There are three primary ways: 1) **Inline styles:** Applying CSS directly within HTML tags using the `style` attribute (least preferred due to poor maintainability). 2) **Internal stylesheet:** Placing CSS within the `