This example demonstrates how to create a minimal interactive data-visualization page using D3.js within the VizHub environment. It displays a single text message, "Hello VizHub!", centered on a dark blue background with a large Ubuntu font. The code imports the `select` function from D3 and a local ES6 module to set the message content. The styles come from an external CSS file that pulls the Ubuntu font from Google Fonts. The example highlights basic module imports, DOM selection, and styling in a self-contained HTML page.