This example demonstrates a minimal setup for an SVG visualization using D3 v6 within an HTML page. The visualization shows a blank SVG canvas with a red background, displaying no data or graphical marks. It uses `d3.select` from the D3 library to target the SVG element and apply the background color via the `style` method. The page is structured with basic HTML, CSS for text styling, and the D3 script loaded from a CDN, providing a foundation for building more complex visualizations.