This example demonstrates the minimal setup required to display text using D3 version 7. It renders the phrase “Hello D3 version 7” directly in the browser window, using the `d3.select` API to target the document body. The code loads the D3 library from a CDN and calls `select('body').text(...)` to set the text content. The page styling sets an unusually large font size, making the output a dramatic visual statement, though no data or complex visualization is involved.