This example demonstrates basic SVG shapes rendered directly in an HTML page. It shows four primitive shapes—two circles and two rectangles—positioned on an empty 960×500 canvas, with one shape in each pair colored via the `fill` attribute. The code uses plain HTML elements within an `<svg>` tag, styled by an external CSS stylesheet. This minimal starter serves as a foundation for exploring SVG rendering without JavaScript libraries, highlighting how intrinsic SVG colors and CSS work together.