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wtf is css-modules-demos?

ruanyf/css-modules-demos — explained in plain English

Analysis updated 2026-07-17 · repo last pushed 2016-06-11

★ 395JavaScriptAudience · developerComplexity · 2/5DormantSetup · easy

TL;DR

A set of six runnable demos teaching CSS Modules, a technique that auto-generates unique class names so CSS styles from different components never collide.

Mindmap

mindmap
  root((repo))
    What it does
      Scopes class names
      Prevents style collisions
      Six progressive demos
    Tech stack
      JavaScript
      React
      CSS Modules
    Use cases
      Learning CSS Modules
      Avoiding class conflicts
      Teaching React styling
    Audience
      Frontend developers
      React learners

Code map

Detail Auto

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filefunction / class

Why would anyone build with this?

REASON 1

Learn how CSS Modules auto-generate unique class names to avoid style collisions across components.

REASON 2

Run each demo locally with npm to see local scoping, global classes, composition, and variables in action.

REASON 3

Understand how to structure CSS in a React project without writing overly specific class names.

REASON 4

Teach a team new to React how CSS Modules solve multi-developer CSS conflicts.

What's in the stack?

JavaScriptReactCSS Modulesnpm

How it stacks up

ruanyf/css-modules-demosopen-gsd/get-shit-done-reduxsecops-7/mikrodash
Stars395398399
LanguageJavaScriptJavaScriptJavaScript
Last pushed2016-06-11——
MaintenanceDormant——
Setup difficultyeasyeasymoderate
Complexity2/53/53/5
Audiencedeveloperdeveloperops devops

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · easy Time to first run · 5min

Requires cloning, npm install, then running demo-specific npm scripts.

Yoink these prompts

Prompt 1
Walk me through demo01 in this repo and explain how CSS Modules turns .title into a unique generated class name.
Prompt 2
Show me how composition works in demo04 of this repo, where one CSS class inherits styles from another.
Prompt 3
Help me set up CSS Modules in my own React project the way this repo's demos configure the build tool.
Prompt 4
Explain the difference between local and global CSS classes using demo01 and demo02 from this repo.
Prompt 5
Give me a checklist for migrating a React app's global CSS to CSS Modules based on these demos.

Frequently asked questions

wtf is css-modules-demos?

A set of six runnable demos teaching CSS Modules, a technique that auto-generates unique class names so CSS styles from different components never collide.

What language is css-modules-demos written in?

Mainly JavaScript. The stack also includes JavaScript, React, CSS Modules.

Is css-modules-demos actively maintained?

Dormant — no commits in 2+ years (last push 2016-06-11).

How hard is css-modules-demos to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is css-modules-demos for?

Mainly developer.

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