Styled Components

CSS-in-JS library for React with scoped styles and theme support via tagged templates.

Overview

styled-components is a CSS-in-JS library that lets you write actual CSS code directly in your JavaScript using tagged template literals. It removes the mapping between components and styles, making it easy to create reusable, scoped styling for React applications.

The library supports server components, client components, streaming SSR, and React Native through a single unified API. It's used by major companies like Spotify, IMDB, Giphy, Patreon, Target, and Warner Bros. to build beautiful, styled web experiences.

styled-components v7 (currently in alpha) brings modern CSS support to React Native, improved performance, and enhanced developer experience with better class names and smaller bundles.

Key features

Tagged template literals for CSS
Component-scoped styling
Dynamic styles with props
Full CSS support including media queries and pseudo-selectors
Server-side rendering compatibility
React Native support
Babel plugin for optimized output
No build step required

Pros

Write actual CSS in JavaScript
Automatic critical CSS extraction
Smaller bundle sizes with Babel plugin
Better class name readability
Works with server components and streaming SSR
Cross-platform support (web and React Native)

Cons

Requires JavaScript runtime for styling
Learning curve for developers unfamiliar with tagged template literals
CSS-in-JS approach may have performance overhead compared to static CSS

Use this if

You want to write CSS directly in your React components with full scoping and dynamic styling capabilities. You're building applications that need server-side rendering or React Native support.

Skip this if

You prefer traditional CSS files or CSS modules. You need maximum performance with zero JavaScript overhead for styling. You're not using React or JavaScript frameworks.

Best for

React component stylingScoped CSS in JavaScriptDynamic styling based on propsServer-side renderingReact Native applicationsBuilding reusable styled components

Alternatives

EmotionCSS ModulesTailwind CSSSass/SCSSLessPostCSS

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