Course/Module 4/Topic 1 of 3Intermediate

CSS Flexbox Layout - Concepts

Explore the key concepts of css flexbox layout with practical examples and exercises.

45 min•By Priygop Team•Last updated: Feb 2026

Introduction to CSS Flexbox Layout

In this section, we cover the fundamental aspects of css flexbox layout. You'll learn core concepts, see real-world examples, and understand how to apply them in your projects.

Key Concepts

Understanding the core principles of css flexbox layout
Practical applications and real-world use cases
Step-by-step implementation guides
Common patterns and best practices
Tips for debugging and troubleshooting
Performance optimization techniques

CSS Flexbox Layout - Code Example

Example

<style>
.flex-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 20px;
  background: #f0f0f0;
}
.flex-item {
  flex: 1;
  padding: 20px;
  background: #667eea;
  color: white;
  text-align: center;
  border-radius: 8px;
}
.flex-item:nth-child(2) { flex: 2; }
</style>
<div class="flex-container">
  <div class="flex-item">1</div>
  <div class="flex-item">2 (flex:2)</div>
  <div class="flex-item">3</div>
</div>

Try It Yourself: CSS Flexbox Layout

Try It Yourself: CSS Flexbox LayoutCSS

CSS Editor

✓ ValidTab = 2 spaces

<style>
.navbar{
  #9cdcfe">display: flex;
  #9cdcfe">justify-content: space-between;
  #9cdcfe">align-items: center;
  #9cdcfe">padding: 15px 30px;
  #9cdcfe">background: #2c3e50;
  #9cdcfe">color: white;
}
.nav-links{ #9cdcfe">display: flex; #9cdcfe">gap: 20px; #9cdcfe">list-style: none; }
.nav-links a{ #9cdcfe">color: white; #9cdcfe">text-decoration: none; }
.nav-links #9cdcfe">a:hover { #9cdcfe">color: #3498db; }
.card-grid{ #9cdcfe">display: flex; #9cdcfe">flex-wrap: wrap; #9cdcfe">gap: 15px; #9cdcfe">padding: 20px; }
.card{ #9cdcfe">flex: 1 1 200px; #9cdcfe">padding: 20px; #9cdcfe">background: #ecf0f1; #9cdcfe">border-radius: 8px; }
</style>
<nav class="navbar">
  <h2>Logo</h2>
  <ul class="nav-links"><li><a href="#">Home</a></li><li><a href="#">About</a></li></ul>
</nav>
<div class="card-grid">
  <div class="card">Card 1</div><div class="card">Card 2</div><div class="card">Card 3</div>
</div>

Result

Click ▶ Run to see the result

Edit the code on the left, then click Run

CSS|22 lines|728 chars|✓ Valid syntax

UTF-8

Quick Quiz: CSS Flexbox Layout

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