import React from 'react' ; import ReactDOM from 'react-dom' ; import { HelmetProvider } from 'react-helmet-async' ; import { createGlobalStyle } from 'styled-components' ; import App from './App' ; import * as serviceWorker from './serviceWorker' ; const GlobalStyles = createGlobalStyle `
  body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
      'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
      sans-serif;

    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
` ; ReactDOM . render ( < HelmetProvider > < GlobalStyles /> < App / > < /HelmetProvider>, document.getElementById('root')); serviceWorker . unregister ( ) ;