pages/_document.js
import Document, { Head, Main, NextScript } from 'next/document';
import React from 'react';
import { ServerStyleSheet } from 'styled-components';
export default class CustomDocument extends Document {
static getInitialProps({ renderPage }) {
const sheet = new ServerStyleSheet();
const page = renderPage((App) => (props) => sheet.collectStyles(<App {...props} />));
const styleTags = sheet.getStyleElement();
return {
...page,
styleTags
};
}
render() {
return (
<html lang="en">
<Head>{this.props.styleTags}</Head>
<body>
<Main />
<NextScript />
</body>
</html>
);
}
}