This example displays the text “Hello World” in the browser, serving as a minimal demonstration of setting up a D3 version 7 project. The page’s body is styled with large, centered text, and the message is injected into a `<pre>` element using the native `document.getElementById` and `textContent` API from the `index.js` file. The code imports the `select` function from the d3 module but does not use it, relying instead on plain JavaScript for the output. D3 is loaded via a CDN link in the HTML.