This example shows how to create basic geometric shapes using SVG elements, including circles and rectangles with different fill colors and positions. The code defines an SVG canvas with a width of 900 and height of 500, then adds four shapes directly in the HTML markup. It uses plain SVG syntax for rendering, with a linked CSS stylesheet that resets the body margins and hides overflow. A small JavaScript snippet logs a message to the browser console, demonstrating where to inspect output using developer tools. The shapes include two circles and two rectangles, with fill attributes specified inline for some elements.