No `styled-jsx` in `_document`

Prevent usage of styled-jsx in pages/_document.js.

Why This Error Occurred

Custom CSS like styled-jsx is not allowed in a Custom Document.

Possible Ways to Fix It

If you need shared CSS for all of your pages, take a look at the Custom App file or define a custom layout.

For example, consider the following stylesheet named styles.css:

body {  font-family: 'SF Pro Text', 'SF Pro Icons', 'Helvetica Neue', 'Helvetica',  'Arial', sans-serif;  padding: 20px 20px 60px;  max-width: 680px;  margin: 0 auto; }

Create a pages/_app.{js,tsx} file if not already present. Then, import the styles.css file.

import '../styles.css'   // This default export is required in a new `pages/_app.js` file. export default function MyApp({ Component, pageProps }) {  return <Component {...pageProps} /> }

These styles (styles.css) will apply to all pages and components in your application.

Useful Links

• Custom Document Caveats
• Layouts
• Built in CSS Support
• Custom App