message: import utilities and markdown from ../css
diff: @@ -2,7 +2,7 @@ import React from 'react'
  import Document, {Head, Main, NextScript} from 'next/document'
  import {ServerStyleSheet} from 'styled-components'
  import {extractCritical} from 'emotion-server'
  -import {UtilityCSS, MarkdownCSS} from '../src'
  +import {utilities, markdown} from '../css'
  export default class MyDocument extends Document {
  static getInitialProps({renderPage}) {
  @@ -13,8 +13,8 @@ export default class MyDocument extends Document {
  styles: (
  <>
  <style id="primer-css">
  - {UtilityCSS}
  - {MarkdownCSS}
  + {utilities}
  + {markdown}
  </style>
  <style id="emotion-static">{extractCritical(page.html).css}</style>
  {sheet.getStyleElement()}
  