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Closes: https://linear.app/vercel/issue/DOC-4648/css Redirects: https://github.com/vercel/front/pull/45417 - Improves the CSS content for clarity and brevity. - Adds Pages Router examples. --------- Co-authored-by: Lee Robinson <[email protected]>
55 lines
1.7 KiB
Plaintext
55 lines
1.7 KiB
Plaintext
---
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title: 'Global CSS Must Be in Your Custom `<App>`'
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---
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## Why This Error Occurred
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An attempt to import Global CSS from a file outside of [`pages/_app.js`](/docs/pages/building-your-application/routing/custom-app) was made.
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Global CSS cannot be used in files other than your [custom `_app.js` file](/docs/pages/building-your-application/routing/custom-app) due to ordering problems and side-effects.
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## Possible Ways to Fix It
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There are two possible ways to fix this error:
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- Move all global CSS imports to your [`pages/_app.js` file](/docs/pages/building-your-application/routing/custom-app).
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- If you do not wish your stylesheet to be global, update it to use [CSS Modules](/docs/app/getting-started/css). This will allow you to import the stylesheet and scope the styles to a specific component.
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### Example
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Consider the stylesheet named [`styles.css`](/docs/app/getting-started/css)
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```css filename="styles.css"
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body {
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font-family: 'SF Pro Text', 'SF Pro Icons', 'Helvetica Neue', 'Helvetica',
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'Arial', sans-serif;
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padding: 20px 20px 60px;
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max-width: 680px;
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margin: 0 auto;
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}
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```
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**Global CSS**:
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Create a [`pages/_app.js` file](/docs/pages/building-your-application/routing/custom-app) if not already present. Then import the `styles.css` file:
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```jsx filename="pages/_app.js"
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import '../styles.css'
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export default function MyApp({ Component, pageProps }) {
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return <Component {...pageProps} />
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}
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```
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**CSS Modules**:
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Rename the `styles.css` file to `styles.module.css`. Then import the file in the component or page where you want to use the styles.
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```jsx filename="pages/index.js"
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import styles from '../../styles.module.css'
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export default function Home() {
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return <div className={styles.container}>Hello World</div>
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}
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```
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