Learn CSS with Real Code Examples
Updated Nov 21, 2025
Installation Setup
No installation required; CSS files are plain text
Create `.css` files using any text editor
Link CSS files in HTML using `<link>` or `<style>` tags
Use browser developer tools for live testing
Optionally use preprocessors like SASS or LESS
Environment Setup
Text editor with CSS support
Browser to test styles
Preprocessors installed if used
Integration with HTML and JS
Optional CSS frameworks installed
Config Files
.css files for main styles
Preprocessor files (.scss, .less)
External libraries or frameworks
Variables and theme files for reusable design
Optional minified production CSS
Cli Commands
N/A - CSS not executed in CLI
Build tools like `sass`, `postcss`, `webpack` process CSS
Linting with `stylelint`
Minification with `cssnano`
Live reload via development servers
Internationalization
Support for different fonts and languages
Directionality via `direction` property
Locale-specific units and spacing
Integration with web fonts and language-specific styles
Flexible layouts for RTL and LTR languages
Accessibility
High-contrast colors for readability
Avoid excessive animations that cause motion sickness
Use focus styles for keyboard navigation
ARIA pseudo-classes to indicate state
Responsive text sizing for accessibility
Ui Styling
Colors, typography, spacing
Layouts with Flexbox and Grid
Visual effects and transitions
Responsive adjustments with media queries
Theming and dark/light modes
State Management
CSS manages visual state via classes, IDs, and pseudo-classes
Media queries handle viewport-dependent states
Transitions animate state changes
Dynamic state via JavaScript class toggling
CSS variables can control theme states
Data Management
Stores style definitions
Variables for reusable values
Custom properties for theming
Media query conditions for responsive adjustments
Animations and keyframes for temporal states