This example demonstrates fundamental SVG shapes, including a circle and a rectangle, composed within a single canvas. The rectangle illustrates both a red stroke and a blue fill, while a second circle is rendered in red, showing how visual properties can vary per element. The code directly uses standard HTML and SVG APIs—specifically the `<svg>`, `<circle>`, and `<rect>` elements—within a simple, self-contained HTML page, with no external libraries involved. The rendering approach is purely declarative SVG markup.