This example displays the text “Hello D3” centered on a blank page. It is a minimal starter template that demonstrates basic D3 setup with an import map for the D3 v7 library. The code uses the `select` function from D3 to target the body element and applies the `text` method to render the greeting. The page styling is defined in CSS, setting the font size and layout. This serves as a simple introduction to using D3 for DOM manipulation.