This example demonstrates fundamental SVG shapes rendered directly in a bare HTML page, including two circles, a rectangle with a blue stroke, and a red fill. The code uses inline SVG markup within the HTML document, with CSS and JavaScript referenced for additional interactivity. It shows basic shape properties such as `cx`, `cy`, `r`, `x`, `y`, `width`, `height`, `fill`, and `stroke-width`. The visualization serves as a minimal starter for understanding SVG fundamentals without external libraries.