Introduction To CSS

CSS (Cascading Style Sheets) is a stylesheet language used to control the look and layout of web pages. While HTML defines the structure of a webpage, CSS is used to define its style—such as colors, fonts, spacing, positioning, and responsiveness. CSS was first introduced by Håkon Wium Lie in 1996 and has become an essential part of modern web development. With CSS, developers can create visually appealing, user-friendly, and responsive websites that work on different devices and screen sizes.

Key Features of CSS

1. Separation of Content and Style – Keeps design (CSS) separate from structure (HTML).

2. Saves Time – A single CSS file can style multiple HTML pages at once.

3. Improves Page Design – Controls colors, fonts, borders, backgrounds, spacing, and more.

4. Cross-Browser Compatible – Works on all modern web browsers.

5. Responsive Design – Enables websites to adapt to different screen sizes (desktop, tablet, mobile).

6. Cascading Nature – Styles can be inherited and overridden, giving flexibility in design.

7. Multiple Styling Options – Inline CSS, Internal CSS, and External CSS.

8. Animation and Effects – Provides transitions, animations, and transformations without JavaScript.

9. Open Standard – Supported and maintained by the W3C.

10. Supports CSS3 Features – Rounded corners, shadows, gradients, flexbox, grid, and media queries.