CF

Flexbox Simplified

4h 41m 57s
English
Paid
Updated September 2026

Flexbox Simplified is a 70-lesson 4 hours 41 minutes self-paced course by Kevin Powell. Flexbox solves real layout problems, but it also has a habit of doing something other than what you expected — columns that won't balance, elements that overflow for no obvious reason, align and justify properties that don't seem to do…

Course facts

Lessons
70
Duration
4 hours 41 minutes
Level
All levels
Language
English
Updated
2026-09-11
Instructor
Kevin Powell
Price
Premium

Flexbox solves real layout problems, but it also has a habit of doing something other than what you expected — columns that won't balance, elements that overflow for no obvious reason, align and justify properties that don't seem to do anything. This course exists to clear up exactly that confusion.

How it builds your understanding

Starting from the fundamentals, the course breaks Flexbox down piece by piece before building back up with practical examples and coding challenges. Each new topic reinforces what came before it, so by the end you're not guessing at properties — you know why a given layout behaves the way it does.

What's included

  • Lessons that explain the actual mechanics behind Flexbox behavior
  • Realistic examples and hands-on challenges to lock in each concept
  • Reusable code snippets and layout patterns for your own projects
  • Cheatsheets to reference later

Across 70 lessons, the goal is simple: finish feeling genuinely confident building layouts with Flexbox, not just familiar with its properties.

As powerful as flexbox is, it can seem like it has a mind of it's own.

  • What to do if the columns are unbalanced?
  • Now these ones are balanced, but I need one to be bigger!
  • Why are things overflowing all of a sudden?
  • Is it align or justify... wait, neither are working?
  • What's the deal with growing and shrinking?!
  • Centering is supposed to be easy now right? But it doesn't always work!

Going from the very basics, we first break flexbox down, then build up our understanding with practical examples and code challenges .

Set up in a way to help reinforce earlier lessons as we continue to explore new content, this course is set up so that you are feeling confident with creating layouts with flexbox when you are done.

  • Lessons that break down how flexbox is working
  • Applying what you're learning to realistic examples
  • Challenges to reinforce what you're learning
  • Code snippets and design patterns you can easily plug 'n play into your projects
  • Cheatsheets that you can reference back to
  • Access to a private group within my Discord community to get help, show your progress, and ask questions
  • All lessons available for download for offline viewing
  • Finally understand how to take full control of flexbox and make it work for you

Who teaches Flexbox Simplified? Kevin Powell

Kevin Powell thumbnail

Kevin Powell is a Canadian developer and one of the most cited independent voices on modern CSS — running the Kevin Powell YouTube channel, which has anchored a generation of front-end developers' relationship with CSS. He is widely respected for the patience and depth of his explanations of the parts of CSS that the language's reputation as a quirky historical accident often obscures.

The course catalog covers modern CSS in depth: Grid and Flexbox layout, custom properties (CSS variables), modern responsive design (container queries, the dynamic viewport units, modern color spaces), CSS animations and transitions, typography on the web, and the design-system thinking that connects CSS to broader UI work. Material is structured for working developers building real interfaces.

The CourseFlix listing under this source carries 7 Kevin Powell courses spanning that range. Material is paid; Kevin Powell's courses are sold individually on the original platform. Courses are aimed at developers ready to make CSS a deliberate craft rather than an afterthought.

What lessons are included in Flexbox Simplified?

This is a demo lesson (10:00 remaining)

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#1: Welcome to the course!
All Course Lessons (70)
#Lesson TitleDurationAccess
1
Welcome to the course! Demo
00:47
2
My approach
05:01
3
The software I'll be using
03:32
4
The Discord Community
08:00
5
The file structure
03:14
6
Introduction to declaring display: flex
00:50
7
The flex container
03:08
8
The flex items - part 1
02:10
9
The flex items - part 2
03:46
10
The flex items - part 3
04:46
11
The flex items - part 4
03:57
12
A challenge
01:47
13
Introduction to flexing our muscles
00:46
14
flex-direction basics
03:38
15
Collapsing margins
04:23
16
flex-direction - part 2
11:08
17
The order property
04:10
18
flex-grow
04:31
19
flex-shrink
03:38
20
Grow & Shrink Challenge
03:33
21
Grow & Shrink Solution
07:38
22
Another challenge
01:59
23
My solution
06:25
24
Visualizing with our dev tools
04:29
25
Introduction to flex-basis
00:30
26
The basics of flex-basis
06:05
27
flex-basis challenge
03:18
28
flex-basis solution
05:59
29
Introduction to alignment and justification
01:20
30
Justification basics
06:29
31
Justification continued
04:35
32
Justification and flex-direction
03:25
33
align-items basics
04:46
34
align-items: baseline
03:36
35
Aligning and justifying buttons
06:16
36
A simple navigation - challenge
01:50
37
A simple navigation - solution
04:55
38
A simple navigation follow-up challenge/solution
02:54
39
A look at align-self
03:03
40
Alignment and Justification form challenge
01:55
41
Alignment and Justification form solution
06:36
42
flex-wrap introduction
01:14
43
The basics of flex-wrap
02:43
44
flex-wrap and flex-direction
03:12
45
flex-wrap challenge
01:35
46
flex-wrap solution
03:05
47
Using flex-wrap with flex-grow and flex-shrink
06:03
48
Layouts with flex-wrap
05:32
49
flex-wrap challenge #2
03:50
50
Solution to the challenge
06:40
51
The flex-flow shorthand
02:56
52
A look at align-content
07:08
53
The place-content shorthand
01:40
54
Introduction to the magic of margins
00:28
55
auto margins and flexbox
09:30
56
Fixing a floating footer
03:41
57
Introduction to gap
00:47
58
the gap property
06:28
59
Creating a fallback for gap
03:19
60
flex-grow, revisited
00:48
61
Pushing flex-grow to it's limits
03:22
62
A use case
08:41
63
Introduction to patterns and layouts
01:37
64
Equal columns, every time
04:57
65
Content / Sidebar
06:35
66
Adaptable sidebar
05:44
67
Grid-ish
02:58
68
Combining layouts and patterns
02:09
69
The holy albatross
09:19
70
The end!
01:08
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Frequently asked questions

Are there any prerequisites for enrolling in this course?
This course does not list specific prerequisites, but a basic understanding of HTML and CSS would be beneficial. The course focuses on teaching Flexbox, so familiarity with web development fundamentals is recommended to fully grasp the material.
What projects or challenges will I complete in this course?
The course includes various challenges and solutions to reinforce learning. Examples include a 'Grow & Shrink Challenge', a 'flex-basis challenge', and creating a 'simple navigation' using Flexbox. These practical exercises are designed to help you apply Flexbox concepts in real-world scenarios.
Who is the target audience for this course?
The course is intended for web developers and designers who want to improve their skills in creating responsive layouts using Flexbox. It caters to those who have a basic understanding of CSS but seek to deepen their knowledge of modern layout techniques.
How does the depth of this course compare to other Flexbox courses?
The course provides a detailed exploration of Flexbox, with 70 lessons covering a wide range of topics such as 'flex-direction', 'flex-wrap', 'alignment and justification', and 'the gap property'. It offers numerous challenges and solutions, allowing for thorough practice and understanding of Flexbox.
Does the course cover any specific tools or software?
Yes, there is a lesson titled 'The software I'll be using' which likely introduces the tools used throughout the course. While the exact software is not listed, it is common for web development courses to use text editors and browser developer tools.
What topics are not covered in this course?
The course specifically focuses on Flexbox and does not cover other CSS layout modules like Grid. It is dedicated to exploring Flexbox-related properties, challenges, and solutions, without venturing into other layout techniques.
How much time should I expect to commit to this course?
While the exact runtime of the course is not provided, with 70 lessons, you can expect to dedicate several hours to complete it. The course includes practical exercises and challenges, so additional time will be needed for hands-on practice and review of solutions.