A demonstration of SVG fundamentals shows a full-screen radial gradient and an animated circle descending vertically over five seconds. The gradient transitions from aliceblue to indigo via an SVG `<animate>` element on the `<stop>` color, while the circle’s `cy` attribute animates from 250px to 350px. Rendered purely as inline SVG in an HTML document, the example uses no external libraries, relying on native SVG markup and SMIL animation for its visual effect.