This example displays a minimal “Hello D3” message in the center of the page, with oversized text scaled to 14em. It uses the D3 v7 library’s `select` function to target the body element and set its text content directly. The rendering approach is straightforward DOM manipulation, with an import map loading the D3 module from a CDN and a module script executing the update. The page serves as a basic starter template, with all styling defined inline in a CSS block.