To test out the new page, we are going to replace the HomePage component in src/App.js with the PostPage component, as follows:

1. Import the PostPage component in src/App.js:

import PostPage from './pages/PostPage'

2. Now, replace the HomePage component with the PostPage component:

            <PostPage id={'react-hooks'} />

As we can see, now only one post, the React Hooks post, gets rendered.