content: import App from 'next/app'
  import React from 'react'
  import HeaderNav from '../components/header-nav'
  
  export default class MyApp extends App {
    static async getInitialProps ({ Component, router, ctx }) {
      let pageProps = {}
  
      if (Component.getInitialProps) {
        pageProps = await Component.getInitialProps(ctx)
      }
  
      return { pageProps }
    }
  
    render () {
      const { Component, pageProps } = this.props
      return (
        <>
          <HeaderNav />
          <Component {...pageProps} />
        </>
      )
    }
  }
  