content: import React from 'react'
  import Document, { Head, Main, NextScript } from 'next/document'
  
  export default class MyDocument extends Document {
    render () {
      return (
        <html>
          <Head>
            <style dangerouslySetInnerHTML={{ __html: this.props.css }} />
          </Head>
          <body>
            <Main />
            <NextScript />
          </body>
        </html>
      )
    }
  }
  