This example displays the text “Hello D3 version 7” centered on a blank page using a font size of 13em. It demonstrates a minimal D3 setup by importing the `select` function from the D3 v7 library and applying it to the document body. The page loads D3 from a CDN, and the main logic runs in a separate `bundle.js` file, with no data or interactive elements involved. The styling is defined in the HTML head, and the body remains empty until the script executes.