This example shows a static SVG canvas with two circles and a rectangle, demonstrating fundamental shapes and styling in SVG. The red and blue circles have radii of 50 pixels, while the green rectangle is 150 by 150 pixels, all positioned within a 960 by 500 viewport. The code uses raw SVG elements—`<circle>` and `<rect>`—with explicit `fill` attributes for color. It relies purely on inline HTML and SVG markup without additional JavaScript libraries or data sources.