This example displays the text “Hello VizHub!” centered in a large font, demonstrating basic D3.js DOM manipulation and ES6 module structure. It loads D3 v5 from UNPKG, uses `select` from D3 to target a div with id `message`, and sets its text content from an imported local module. The code illustrates how to combine external libraries, local ES6 modules, and CSS styling within a VizHub project, serving as a minimal template for building interactive visualizations.