This example shows a minimal SVG visualization rendered in a browser, featuring a single circle with no position or fill styling, so it appears as a default black dot at the top-left of the viewport. The page relies on an inline SVG element with width and height set to 100%, and the circle uses an `r` attribute of 100 but no `cx` or `cy`, which defaults to the origin. The code uses no JavaScript libraries or APIs—it is purely static HTML and SVG markup, as defined in the `index.html` file.