Hello VizHub
This example displays a bold, full-screen “Hello VizHub!” message in large white text on a dark blue background. It uses D3.js version 5 with ES6 modules, importing `select` from the D3 library to target the `#message` div and set its text content. The message string comes from a separate local module, demonstrating modular code organization. Styling via CSS includes the Ubuntu font from Google Fonts, with the body centered and set to a 12em font size.