import React from 'react' import PropTypes from 'prop-types' import Head from 'next/head' import {ThemeProvider} from '@material-ui/core/styles' import CssBaseline from '@material-ui/core/CssBaseline' import theme from '../src/theme' export default function MyApp(props) { const {Component, pageProps} = props React.useEffect(() => { const jssStyles = document.querySelector('#jss-server-side') if (jssStyles) { jssStyles.remove() } }, []) return ( <>