1. Understanding CSS

CSS (Cascading Style Sheets) is a language used to style HTML elements for various media, including screens and print. It allows web developers to create consistent and reusable designs across multiple web pages, saving significant time and effort. By using external CSS files, developers can centralize and manage style definitions efficiently.

2. Demonstrating CSS Capabilities

CSS enables the use of different stylesheets to alter the appearance of the same HTML page. This flexibility allows developers to experiment with multiple designs and layouts by simply switching stylesheets. Without a stylesheet, pages rely on default browser styling, showcasing the power and necessity of CSS for custom designs.

3. Advantages of CSS

CSS solved the problem of embedding style information within HTML, which made web development cumbersome. Previously, formatting tags like <font> and color attributes were scattered across every page, leading to inefficiencies. By separating style from content, CSS streamlined web design and made it easier to apply site-wide changes by editing a single stylesheet file.