Core Concepts of HTML

14-05-2026

1. What is a container in HTML?
   In HTML, a container tag is a type of tag that requires both an opening part and a closing part to enclose content or another element.s

2. What is Semantic HTML? why?
   Semantic HTML is a way of tagging some HTML tags to add more semantic meaning to the content, instead of a simple "Div" soup Structure. This approach also makes the website easier to navigate and better for SEO.

3. Class selectors
   class selector matches elements based on the contents of their class attribute.

4. Element Selectors
   target all instances of a specific HTML tag.

5. What is VW (viewport width)?
   The VW unit is relative to 1% of the viewport width, making it useful for setting sizes based on the browser window width.

6. What is VH(viewport hight)?
   The vh unit is relative to 1% of the viewport's height, making it useful for setting sizes based on the browser window's height.

7. CSS Grid Layout?
   CSS Grid Layout is a powerful, two-dimensional layout system that allows you to create complex web designs by organising content into rows and columns simultaneously
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