Smilly face
A yellow circle with a black outline forms a smiley face on an empty page, rendered as a static SVG graphic. Two smaller black circles serve as eyes, positioned on the left and right sides of the yellow face. The visualization uses inline SVG elements, including `<circle>` tags with explicit `cx`, `cy`, and `r` attributes, and the page is styled with CSS that removes the body margin. The HTML file, `index.html`, contains only this simple vector drawing.