import Document, { Head, Html, Main, NextScript } from "next/document"; // class Document extends NextDocument { class MyDocument extends Document { render() { return ( <Html> <Head> <link href="https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@100;300;400;500;600;700&display=swap" rel="stylesheet" /> </Head> <body> <Main /> <NextScript /> </body> </Html> ); } } export default MyDocument;