This example demonstrates how to build a simple D3.js application that displays a custom message in the browser. It shows a single text element, "Hello VizHub!", centered on the page using CSS styling, and serves as a minimal template for setting up a VizHub project. The code loads D3 v5 from a CDN and uses the `select` API to target a div element by ID, setting its text content from a locally imported ES6 module. The example highlights basic module imports, DOM manipulation, and integration of external libraries.