This example displays the text “Hello D3 version 7” as a large, centered message on a blank page. It demonstrates the basic setup for starting a project with D3 version 7, using the `d3.select` method to target the body element and set its text content. The code loads D3 from the unpkg CDN and includes a separate `bundle.js` script for the main logic. The page uses minimal CSS for centering and font sizing, with no data or interactive elements present.