Free course

CSS Course

Learn the cascade, selectors, the box model, Flexbox, Grid, responsive design, and the modern CSS features used in real interfaces.

8 modules · 40 lessons · No signup

Prerequisites: HTML

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What you'll learn

Style an HTML page deliberately and build responsive layouts with Flexbox and Grid.

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Course contents

  1. Add CSS to a page

    Rules, declarations, stylesheets, selectors, and DevTools.

    1. ✓ What CSS does
    2. ✓ Anatomy of a CSS rule
    3. ✓ Add CSS to HTML
    4. ✓ Inspect CSS with DevTools
    5. ✓ Start the course page

  2. The cascade

    Inheritance, specificity, source order, and selector behavior.

    1. ✓ Type, class, and ID selectors
    2. ✓ Combinators
    3. ✓ Pseudo-classes and pseudo-elements
    4. ✓ Cascade and specificity
    5. ✓ Inheritance

  3. Values and visual language

    Color, units, typography, backgrounds, and custom properties.

    1. ✓ Colors
    2. ✓ Length units
    3. ✓ Typography
    4. ✓ Backgrounds and borders
    5. ✓ Custom properties and calculations

  4. Boxes and positioning

    The box model, normal flow, positioning, and stacking.

    1. ✓ The box model
    2. ✓ Box sizing
    3. ✓ Margin and padding
    4. ✓ Display and normal flow
    5. ✓ Positioning
    6. ✓ Stacking and overflow

  5. Flexbox

    Build and align one-dimensional layouts.

    1. ✓ Start a Flexbox layout
    2. ✓ Align flex items
    3. ✓ Grow, shrink, and basis
    4. ✓ Wrap flex items
    5. ✓ Build a Flexbox header

  6. Grid

    Build two-dimensional layouts with explicit tracks.

    1. ✓ Start a Grid layout
    2. ✓ Define flexible tracks
    3. ✓ Place grid items
    4. ✓ Named grid areas
    5. ✓ Build the feature grid

  7. Responsive and modern CSS

    Adapt layouts and motion to screens and user preferences.

    1. ✓ Responsive foundations
    2. ✓ Media queries
    3. ✓ Container queries
    4. ✓ Transitions, animations, and motion
    5. ✓ Finish the responsive page

  8. Debugging and review

    Inspect layout problems and review the complete course.

    1. ✓ Debug the cascade
    2. ✓ Debug layout and overflow
    3. ✓ Bisect a CSS problem
    4. ✓ Final CSS review