SVG TEST
This example demonstrates the basic building blocks of SVG graphics on a plain HTML page. It shows how to create and style two circles and a rectangle using inline SVG elements, with one circle left unfilled and the other filled red. The rectangle uses a blue stroke with a width of 10 and no fill. The code exercises fundamental SVG attributes such as `cx`, `cy`, `r`, `fill`, `stroke`, and `stroke-width` within a fixed 200 by 200 coordinate system. No external libraries or data are involved; the visualization relies entirely on hand-written markup.