shapes with svg
This example demonstrates how to integrate D3.js for DOM manipulation within a basic HTML page. It renders a large "Hello VizHub!" message in the center of the screen using the `select` API to update text content. A local ES6 module provides the message string, while d3 v5 is loaded via CDN. The visualization uses SVG as its rendering framework, though the visible output focuses on styled text rather than graphical shapes.