This example demonstrates the simplest possible D3 v7 setup: a single page that renders the static text “Hi all!” in large red type. It uses `d3.select` to target the `body` element and chains `.text()` and `.style()` methods to set the content and color. The page loads D3 from a CDN, and the code is separated into an `index.js` module that runs alongside a small `bundle.js` file. No data or complex visualization is involved; the focus is purely on the minimum scaffolding required to start a D3 project.