Hello VizHub
This example demonstrates a minimal D3.js visualization that displays a text message, "Hello VizHub!", on a webpage. The text appears in a large, centered Ubuntu font with a dark blue background. The code uses D3’s `select` method to target an HTML `div` element and set its text content, while an ES6 module exports the message string. Styling is handled via CSS, and the page loads D3 v5 from a CDN.