CSS (Cascading Style Sheets) is essential for designing visually appealing websites. Here's a concise guide to get you started:

Basics of CSS

  • Syntax: Use selectors to target HTML elements and apply styles via key-value pairs
    selector { property: value; }
    
  • File Structure: Store CSS in .css files and link to HTML using <link rel="stylesheet" href="styles.css">

Key Concepts

  1. Selectors

    • Element selectors (e.g., p, div)
    • Class selectors (e.g., .button)
    • ID selectors (e.g., #header)
    • Attribute selectors (e.g., [type="text"])
  2. Box Model

    • width, height, padding, border, margin
    • Example:
      .box { 
        width: 200px; 
        padding: 10px; 
        border: 2px solid #333; 
        margin: 15px; 
      }
      
  3. Layout Techniques

    • Flexbox
      Flexbox Layout

      Use display: flex for responsive design
    • Grid
      CSS Grid System

      Create complex layouts with grid-template-columns

Best Practices

  • Prioritize mobile-first design
  • Use semantic HTML for better accessibility
  • Leverage CSS variables for theme customization
  • Minify code and enable compression for performance

Resources

💡 Tip: Always test styles in multiple browsers and use tools like Chrome DevTools for debugging.