How to use CSS in your application
Next.js provides several ways to use CSS in your application, including:
CSS Modules
CSS Modules locally scope CSS by generating unique class names. This allows you to use the same class in different files without worrying about naming collisions.
To start using CSS Modules, create a new file with the extension .module.css and import it into any component inside the app directory:
.blog {
padding: 24px;
}import styles from './styles.module.css'
export default function Page({ children }: { children: React.ReactNode }) {
return <main className={styles.blog}>{children}</main>
}Global CSS
You can use global CSS to apply styles across your application.
To use global styles, create a app/global.css file and import it in the root layout to apply the styles to every route in your application:
body {
padding: 20px 20px 60px;
max-width: 680px;
margin: 0 auto;
}// These styles apply to every route in the application
import './global.css'
export default function RootLayout({
children,
}: {
children: React.ReactNode
}) {
return (
<html lang="en">
<body>{children}</body>
</html>
)
}Good to know: Global styles can be imported into any layout, page, or component inside the
appdirectory. However, since Next.js uses React's built-in support for stylesheets to integrate with Suspense, this currently does not remove stylesheets as you navigate between routes which can lead to conflicts. We recommend using global styles for truly global CSS, and CSS Modules for scoped CSS.
External stylesheets
Stylesheets published by external packages can be imported anywhere in the app directory, including colocated components:
import 'bootstrap/dist/css/bootstrap.css'
export default function RootLayout({
children,
}: {
children: React.ReactNode
}) {
return (
<html lang="en">
<body className="container">{children}</body>
</html>
)
}External stylesheets must be directly imported from an npm package or downloaded and colocated with your codebase. You cannot use <link rel="stylesheet" />.
Next Steps
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