CSS MCQs – Cross-Browser Compatibility and Vendor Prefixes

11.) What is the purpose of the -webkit- prefix in CSS?

A) Targeting Microsoft Edge browser
B) Targeting Firefox browser
C) Targeting Safari and Chrome browsers
D) Targeting Opera browser

Answer: Option C

Explanation: The -webkit- prefix is used to target specific features in Safari and Chrome browsers.

12.) Which CSS property typically requires a -ms- prefix for compatibility with Internet Explorer?

A) flexbox
B) box-shadow
C) animation
D) border-radius

Answer: Option A

Explanation: Flexbox properties often require the -ms- prefix for compatibility with older versions of Internet Explorer.

13.) When should vendor prefixes be removed from CSS properties?

A) Before the feature is widely supported by all browsers
B) After thorough testing and ensuring cross-browser compatibility
C) Immediately after adding them for experimental features
D) Only if the website is designed for modern browsers

Answer: Option B

Explanation: Vendor prefixes should be removed once the CSS feature is stable and supported by all targeted browsers, after ensuring compatibility through testing.

14.) Why are vendor prefixes discouraged for production code?

A) They increase the size of CSS files
B) They may cause compatibility issues with future browser versions
C) They are not recognized by any browsers
D) They slow down the rendering of web pages

Answer: Option B

Explanation: Vendor prefixes may become obsolete or deprecated in future browser updates, leading to compatibility issues and the need for maintenance.

15.) Which tool is commonly used to automate the generation of vendor prefixes in CSS?

A) CSS Lint
B) CSS Minifier
C) Autoprefixer
D) CSS Validator

Answer: Option C

Explanation: Autoprefixer is a popular tool used to automatically add vendor prefixes to CSS during the build process, reducing the manual effort required for cross-browser compatibility.

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