Overview

CSS (Cascading Style Sheets) is the language used to style and layout web pages, controlling how HTML elements look and appear on screen. By learning CSS, you can change colors, fonts, spacing, and positioning to create visually appealing websites. It works alongside HTML to separate the structure of a page from its visual presentation.

Key Points

• CSS uses selectors to target HTML elements and apply styling rules to them
• Properties like color, font-size, margin, and padding control the appearance and spacing of elements
• The cascade and specificity determine which styles are applied when multiple rules target the same element
• CSS can be written inline, in a style tag, or in a separate external stylesheet
• Responsive design techniques in CSS allow websites to adapt to different screen sizes and devices

Why This Matters

CSS is essential for web development and is used by virtually every website you visit to create attractive, user-friendly interfaces. Understanding CSS opens doors to careers in web design and development, and helps you create professional-looking projects for school or personal use.

Suggested Next Steps

• CSS selectors and specificity
• Responsive design and media queries
• CSS flexbox and grid layouts

Sources

• MDN Web Docs: CSS
• W3C CSS Specifications