This example displays two basic SVG shapes—a circle and a rectangle—on a fixed 960 by 500 canvas. The circle uses default styling, while the rectangle is explicitly filled with red. The code directly embeds SVG elements in HTML and applies a small external stylesheet to remove page margins and hide scrollbars. Rendering relies solely on native SVG markup within the browser, without any JavaScript libraries, and the stylesheet also defines a `.highlighted` class that is not used by the shapes.