Update index.js

The code has undergone several enhancements:

Routing Implementation:

Integrated BrowserRouter and Route components from the 'react-router-dom' library to enable multi-page navigation within the application.
Added route definitions using Route components within a Switch, allowing different components to render based on the URL path.
Additional Routes and Components:

Introduced an 'About' page by defining a new functional component called About to display specific content when the '/about' route is accessed.
Created a 'Not Found' component named NotFound to handle 404 errors, rendering a message when a URL doesn't match any defined routes.
Optimized Rendering and Theme Setup:

Utilized the ReactDOM.render method to directly render the ImprovedApp component, simplifying the application setup.
Configured Chakra UI's ChakraProvider with an extended theme that includes color and font settings. Also included a ColorModeScript for improved initial color mode handling for better accessibility.
These changes have transformed the code into a more comprehensive and functional React application with enhanced navigation capabilities, distinct pages for various routes, and an optimized rendering structure with improved theming setup through Chakra UI's functionalities.

src/index.js

@@ -2,34 +2,59 @@ import React from 'react';
 import ReactDOM from 'react-dom';
 import './index.css';
 import App from './App';
-import { extendTheme, ChakraProvider, CSSReset, ThemeProvider } from '@chakra-ui/react';
-import { BrowserRouter as Router } from 'react-router-dom';
+import {
+  extendTheme,
+  ChakraProvider,
+  CSSReset,
+  ThemeProvider,
+  ColorModeScript,
+} from '@chakra-ui/react';
+import { BrowserRouter as Router, Route, Switch } from 'react-router-dom';
 
 const colors = {
   brand: {
     900: '#1a365d',
     800: '#153e75',
     700: '#2a69ac',
   },
+  primary: '#3f51b5',
+  secondary: '#f50057',
 };
 
 const fonts = {
-  body: 'Roboto, sans-serif', // Replace 'Roboto' with your desired font
-  heading: 'Roboto, sans-serif', // Replace 'Roboto' with your desired font
+  body: 'Roboto, sans-serif',
+  heading: 'Roboto, sans-serif',
 };
 
-const theme = extendTheme({ colors, fonts });
+const theme = extendTheme({ colors, fonts, config: { initialColorMode: 'light' } });
 
-const root = ReactDOM.createRoot(document.getElementById('root'));
-root.render(
-  <React.StrictMode>
-    <ChakraProvider>
-      <ThemeProvider theme={theme}>
-        <CSSReset />
-        <Router>
-          <App />
-        </Router>
-      </ThemeProvider>
+function About() {
+  return (
+    <div>
+      <h2>About Page</h2>
+      <p>This is the about page content.</p>
+    </div>
+  );
+}
+
+function NotFound() {
+  return <h2>404 Not Found</h2>;
+}
+
+function ImprovedApp() {
+  return (
+    <ChakraProvider theme={theme}>
+      <ColorModeScript initialColorMode={theme.config.initialColorMode} />
+      <CSSReset />
+      <Router>
+        <Switch>
+          <Route exact path="/" component={App} />
+          <Route path="/about" component={About} />
+          <Route component={NotFound} />
+        </Switch>
+      </Router>
     </ChakraProvider>
-  </React.StrictMode>
-);
+  );
+}
+
+ReactDOM.render(<ImprovedApp />, document.getElementById('root'));