HTML Starter
A bare minimum HTML page renders a single SVG element that fills the viewport, with its background color set to red via D3's `select` function. The code uses `d3.v5` and React, with the SVG statically defined in the markup and manipulated through D3's selection API. The example demonstrates the simplest possible setup for combining D3 with a framework, serving as a starting point for more complex visualizations. The included stylesheet applies a large centered body text, though the visible output is limited to the red SVG background.