This example demonstrates how to load D3 via UNPKG and use ES6 modules in VizHub. It imports the `select` function from D3 and a `message` string from a local `myMessage.js` module. The code then uses `select` to target the `#message` div and sets its text content, which is styled with large centered font via CSS. It showcases basic module imports and DOM manipulation without any data processing or visualization.