Learning CSS

Dev Learning

Contains adsIn-app purchases

About this app

CSS is the language that defines how HTML elements are visually presented, from font sizes to entire page layouts. This app covers everything from fundamental properties through modern techniques like Flexbox, Grid, and animations.

The app treats Flexbox and Grid as complementary tools — not substitutes — and teaches when to use each one, which is the most common question among CSS beginners.

What you’ll study

• Selectors, specificity, and cascade
• Box model and spacing
• Flexbox
• CSS Grid
• CSS variables and theming
• Animations and transitions

How it works

Content is organized in modules. You’ll find exercises with feedback, an in-app IDE to try code snippets, saved progress, and a completion certificate, plus a premium option without ads.

Who it’s for

• HTML students who want to advance to visual styling
• Back-end developers who need to understand CSS
• Designers who want to code their own layouts

Start with the first module and move forward as your schedule allows.

What’s new

Interactive quiz, My Journey (level/XP), plus stability and study experience improvements.