Hello VizHub
This example demonstrates how VizHub handles a complete D3.js project structure, displaying a simple text message. The code imports the `select` function from D3 v5 and uses it to target the `#message` div, setting its content from an exported ES6 module variable. A separate stylesheet applies an Ubuntu font, dark blue background, and large centered text. The example shows minimal D3 API usage—specifically `d3.select`—to update the DOM, with all assets linked from an HTML entry point.