This example uses D3 v5 within a React app to display a static SVG visualization. It shows a base64-encoded JPEG image as a background fill within an SVG pattern, with the pattern applied to a rectangle covering the entire canvas. The code uses an SVG `<pattern>` element with `patternContentUnits` referencing the embedded image, and includes minimal styling for HTML text elements. No interactive or data-binding features are present in this simple rendering.