This example demonstrates a minimal integration of HTML, CSS, and SVG within a single page. It renders a large yellow circle containing a smaller black circle, alongside a text message “Hello HTML!” styled with CSS. The visualization uses plain SVG elements (`<circle>`) with hard-coded coordinates and radii, and the page includes a paragraph of text. The code highlights basic SVG nesting and CSS font sizing, serving as a simple template for web-based graphics without additional libraries.