CSS3 Mastery Course | Modern Web Styling

Master Modern CSS3

Learn Flexbox, Grid, animations, responsive design, and advanced styling techniques to create beautiful, modern web interfaces.

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CSS3 Animation Demo

CSS3 Fundamentals

Master the core concepts that power modern web styling

1

Introduction to CSS3

  • CSS syntax, selectors & declarations
  • External, internal & inline CSS
  • Cascade, specificity & inheritance
  • Understanding the CSS box model
2

Core Concepts

  • Modern color systems (RGBA, HSLA)
  • Units: px, %, rem, em, vw, vh
  • Box model & box-sizing
  • Display properties and positioning
3

Typography & Text Styling

  • Font families & weights
  • Line-height & letter-spacing
  • Text alignment & decoration
  • Google Fonts integration

Flexbox Layout System

One-dimensional layout model for flexible and responsive designs

Flexbox Container Example
.container {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}
Flex Item 1
Flex Item 2
Flex Item 3
Flex Item 4
Flex Item 5

CSS Grid Layout

Two-dimensional layout system for complex responsive designs

CSS Grid Example
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    grid-template-rows: masonry;
}
Grid Item 1
Grid Item 2
Grid Item 3
Grid Item 4
Grid Item 5
Grid Item 6

Advanced CSS Features

Modern CSS techniques for stunning visual effects

4

Backgrounds & Effects

  • Background images & gradients
  • Box-shadow & text-shadow
  • CSS transitions & animations
  • 2D/3D transforms
5

Responsive Design

  • Media queries & breakpoints
  • Mobile-first approach
  • Responsive images & typography
  • Flexible layouts
6

Flexbox Mastery

  • Flex container & items
  • Axis alignment & distribution
  • Flexible sizing properties
  • Real-world use cases

Responsive Design

See how this box changes color at different screen sizes

Responsive CSS Example

This box uses media queries to change its background color based on screen width.

Try resizing your browser window!

Media Query Example
/* Default styles */
.responsive-box {
    background: var(--gradient-primary);
}

/* Tablet styles */
@media (max-width: 768px) {
    .responsive-box {
        background: var(--gradient-secondary);
    }
}

/* Mobile styles */
@media (max-width: 480px) {
    .responsive-box {
        background: var(--accent-color);
    }
}

CSS Grid System

Two-dimensional layout power for modern web design

8

CSS Grid Fundamentals

  • Grid container & grid items
  • Defining rows & columns (fr units)
  • Grid-template properties
  • Gap, repeat(), minmax() functions
9

Advanced Grid Concepts

  • Nested grids
  • Auto-placement algorithm
  • Grid lines & grid areas
  • Alignment properties
10

Real-World Grid Layouts

  • Portfolio layouts
  • Dashboard designs
  • Image galleries
  • Landing page structures

CSS Tools & Frameworks

Essential tools for modern CSS development

SASS/SCSS

CSS preprocessor with variables, nesting, and mixins

Tailwind CSS

Utility-first CSS framework for rapid UI development

Bootstrap

Popular CSS framework with pre-built components

DevTools

Browser tools for debugging and inspecting CSS

Hands-On Projects

Apply your CSS skills with real-world projects

Responsive Pricing Table

Create a flexible pricing table using Flexbox and media queries

Grid Landing Page

Build a complete landing page using CSS Grid layout

Flexbox Navigation

Design a responsive navigation bar using Flexbox

Animated Product Card

Create interactive product cards with CSS animations

Best Practices & Advanced Topics

Professional CSS development techniques

11

Combining Flexbox & Grid

  • When to use Flexbox vs Grid
  • Hybrid responsive layouts
  • Modern layout architecture
  • Best practices for layout systems
12

CSS Best Practices

  • Naming conventions (BEM)
  • Clean and reusable CSS
  • Avoiding specificity conflicts
  • CSS variables and organization
14

Mini Projects

  • Responsive pricing table
  • Landing page with Grid
  • Flexbox navigation system
  • Animated product cards