This example demonstrates fundamental SVG rendering using vector shapes and CSS animations on a static HTML page. It shows a large circle and a triangular path, with the triangle flashing between green and red via an infinite CSS keyframe animation. The code uses native SVG elements such as `<circle>` and `<path>`, styled through CSS properties like `fill` and `stroke`, with the animation defined using `@keyframes`. The rendering approach relies entirely on inline SVG markup within a 500×500 coordinate space, embedded directly in the browser DOM.