This example demonstrates the minimal structure of a web page rendered with HTML, CSS, and JavaScript, showing how a single SVG circle is placed on a canvas. It uses an inline `<style>` block to remove page margins and hide overflow, and an inline `<svg>` element with a fixed width and height to define the circle’s position. No external libraries or frameworks are imported, so the example relies solely on native browser APIs for markup and styling, providing a starting point for more complex visualization projects.