This example demonstrates the minimal setup required to render text with D3 version 7, loading the library via a CDN and using the `select` function to target the page body. It shows the basic pattern of importing from D3, appending text content, and applying global CSS styling for centered, oversized typography. The code relies on `d3.select()` from the D3 v7 API, with the `bundle.js` file serving the JavaScript logic while `index.html` provides the document structure and stylesheet. The visualization itself is a static "Hello D3 version 7" message, serving as a starter template for beginners.