Hello VizHub
This example demonstrates how to assemble a minimal D3.js visualization within the VizHub environment, displaying the text “Hell World!” centered on the page. It shows the project structure with separate files for the HTML shell, styles, an ES6 module for the message, and the main script. The code imports the `select` function from D3 v5 and uses it to set the text content of a `div` element, while a local ES6 module exports the string.