CSS 3

CSS (Cascading Style Sheets) controls the look and layout of your website. It styles HTML elements by defining colors, fonts, spacing, and positions. CSS can be written in three ways: inline (inside an element), internal (in a <style> tag in the HTML head), or external (in a separate .css file). CSS works using selectors and declarations, such as p { color: red; }, which turns all paragraph text red. Beginners learn key concepts like the box model, which includes content, padding, border, and margin, and layout systems like Flexbox and Grid, which allow for precise arrangement of content. Responsive design is achieved using media queries, which adjust styling for different screen sizes. CSS3 introduced animations and transitions to add visual effects. Mastering CSS is essential to make your web pages user-friendly, visually attractive, and mobile-friendly.