Guided Notes
W3.CSS: Getting Started
What a CSS framework is, adding W3.CSS, containers, panels, cards, borders, padding, margins, and rounding.
What is a CSS framework?
Slide 1 / 5A CSS framework is a ready-made stylesheet full of reusable classes. Instead of writing your own CSS for every button and grid, you add class names to your HTML:
<button class="w3-button w3-blue w3-round">Save</button>
W3.CSS is a small, free framework from W3Schools. It's plain CSS — no JavaScript required — responsive by default, and works in every modern browser. Bootstrap and Tailwind are other popular frameworks built on the same idea.