This example demonstrates a minimal D3.js visualization that displays a greeting message in large, centered text on a dark blue background. It renders the phrase "Hello VizHub!" using D3’s `select` method to set the text content of an HTML division. The code imports a local ES6 module for the message, loads D3 v5 from a CDN, and applies styling with an external stylesheet. The visualization highlights basic module imports, DOM selection, and themed typography.