Week 3 Notes

3.1 What is CSS?

CSS (Cascading Style Sheets) controls how HTML content LOOKS. While HTML is the structure (like the bricks of a building), CSS is the finishing — the paint, the tiles, the furniture arrangement. Without CSS, every web page would just be plain black text on a white background.

The word 'Cascading' means that styles can come from multiple sources and they 'cascade' (flow down) with a specific priority. Styles you write yourself override browser defaults.