This example displays the text “Hello D3 version 7” centered on a white page. The page loads D3 version 7.8.2 from a CDN and uses the `select` method to target the `body` element, then applies the `.text()` method to set its content. The page’s CSS sets a font size of 13em, making the message extremely large. The demonstration shows the simplest possible D3 v7 usage, requiring only a single JavaScript call to inject static text into an HTML document.