This example demonstrates a simple SVG card with a title label and a greeting message, styled with a drop shadow. It shows how to import D3.js from a CDN via `https://unpkg.com/d3@5.16.0/dist/d3.min.js` and use the `select` API from the `d3` module to set text content. The code also imports a local ES6 module (`./myMessage`) to supply the string `'Hello VizHub!'`, and uses an external `styles.css` for text formatting.