This example demonstrates how to combine SVG primitives with CSS styling within a React-based visualization. The code manually constructs SVG elements—a red circle and a blue-tinted rectangle—directly in the HTML markup, while a linked stylesheet applies typography and color rules to the page and a highlighted class. The file also includes an empty circle with a large radius, suggesting the use of SVG’s native coordinate system for positioning shapes. The approach relies on hand-coded SVG tags and external CSS rather than a charting or layout library.