adding mui theme to index.js
import React from 'react';
import { render } from 'react-dom';
import { MuiThemeProvider, createMuiTheme } from '@material-ui/core/styles';
import CssBaseline from "@material-ui/core/CssBaseline";
import Root from './Root';
const theme = createMuiTheme();
function App() {
return (
<MuiThemeProvider theme={theme}>
<React.Fragment>
<CssBaseline />
<Root />
</React.Fragment>
</MuiThemeProvider>
);
}
render(<App />, document.querySelector('#app'));