This example demonstrates how to load D3 via UNPKG and use ES6 modules in a VizHub project. It uses the `select` function from D3 to target a `#message` div and set its text content. The text string comes from a local module, `myMessage.js`, which exports a `message` constant. The final page renders a centered, large-font "Hello VizHub!" message using CSS from `styles.css`, showcasing basic module imports and DOM manipulation.