Q1. What is semantic HTML and why is it important?
Semantic HTML uses meaningful tags (<header>, <nav>, <article>) that describe content, improving accessibility and SEO.
Q2. Why should you use alt attributes on images?
Alt text improves accessibility for screen readers, helps SEO, and displays when images fail to load.
Q3. What is responsive web design?
Responsive design ensures websites look good on all devices using relative units, media queries, and flexible layouts.
Q4. Why separate HTML, CSS, and JavaScript?
Separation of concerns improves maintainability, code readability, and allows browsers to cache files separately.
Q5. What is the purpose of the doctype declaration?
The doctype (<!DOCTYPE html>) tells browsers which HTML version to use, ensuring proper rendering mode.