This example is a minimal D3 starter page that renders the text “Hello D3 version 7” centered in the browser window. It demonstrates the basic setup for using D3 v7, including importing the `select` function from the d3 module and chaining it to set the text content of the `body` element. The code relies on D3’s selection API, with the script loaded from a CDN. No data source is used; the display is purely static text with CSS styling for font size and alignment.