SVG Fundamentals
This example shows how SVG shapes are created directly in HTML, placing two circles with different fill colors to demonstrate basic vector rendering. The code uses inline SVG elements, with the `<circle>` tag defining the circles and CSS properties controlling their appearance. A black circle and a red circle are positioned at distinct coordinates to illustrate how SVG coordinates work. This minimal demonstration relies on the HTML `<svg>` element and its built-in geometry, requiring no additional JavaScript or libraries.