message: use next-sass plugin output
diff: @@ -2,6 +2,7 @@ import React from 'react'
  import Document, {Head, Main, NextScript} from 'next/document'
  import {ServerStyleSheet} from 'styled-components'
  import {parse} from 'url'
  +import '../src/primer-react.scss'
  const deployURL = process.env.NOW_URL || ''
  const deployHostname = parse(deployURL).hostname
  @@ -30,7 +31,7 @@ export default class MyDocument extends Document {
  <meta charSet="utf8" />
  <link rel="icon" href={`${baseURL}/assets/favicon.png`} />
  <link rel="apple-touch-icon" href={`${baseURL}/assets/apple-touch-icon.png`} />
  - <link rel="stylesheet" href={`${baseURL}/dist/css/build.css`} />
  + <link rel="stylesheet" href={`${baseURL}/_next/static/style.css`} />
  <meta name="viewport" content="width=device-width,initial-scale=1" />
  <meta name="generator" content="Compositor X0" />
  <meta name="og:title" content="Primer React" />
  