This example demonstrates a minimal D3 setup by rendering the text “Hello D3 version 7” in the center of the page. It uses the `select` API from D3 to target the `body` element and set its text content. The page loads D3 v7.8.5 from a CDN, and the main script imports the `select` function specifically. The styling applies an extremely large font size, though the data itself is static and hardcoded rather than loaded from an external source.