This example demonstrates the simplest possible D3.js v6 visualization: a single HTML element displaying the text “hello word!” in large green letters. The page loads D3 from a CDN and uses the `d3.select` method to target the body element, then chains `.text()`, `.style()`, and `.style()` to set the content and formatting. The code relies entirely on D3’s selection API, with no data binding or scales, and the styling is applied directly via inline CSS properties like `color` and `font-size`.