pages/_document.tsx

import Document, {
  Html,
  Head,
  Main,
  NextScript,
  DocumentContext,
} from 'next/document';
export default class MyDocument extends Document {
  static async getInitialProps(ctx: DocumentContext) {
    const initialProps = await Document.getInitialProps(ctx);
    return {
      ...initialProps,
      styles: (
        <>
          {initialProps.styles}
        </>
      ),
    };
  }

  render() {
    return (
      <Html lang='en'>
        <Head />
        <body>
          <Main />
          <NextScript />
        </body>
      </Html>
    );
  }
}