This example displays the text “Hello VizHub!” in a large, centered message on the page. It demonstrates a minimal D3.js setup where the `select` function from D3 targets a `<div>` element with the ID `message` and sets its text content. The message text originates from a separate ES6 module via an exported constant, and the styling is defined in a linked CSS file. The code uses D3 v6 and follows a basic HTML structure with a bundled JavaScript file.