This example demonstrates how to create a face using D3.js version 7, rendered as an SVG element with a red background. The code selects the SVG container using `d3.select` and applies the background color via the `style` method. The page structure includes an HTML file that loads D3 from a CDN, a linked stylesheet that resets margins, and JavaScript that manipulates the SVG directly. The visualization is minimal, showing the foundational steps for building custom shapes with D3's SVG manipulation capabilities.