This example reproduces a Sol LeWITT drawing using raw SVG and JavaScript, without any external libraries. It renders 100 horizontal and 100 vertical striped rectangles that intersect to create a geometric grid, with two circular masks applied to reveal different portions of the stripes. The `mask` element and `circle` primitives define a central circular boundary, while the second mask inverts its effect. The visualization spans the full browser window by reading `window.innerWidth` and `window.innerHeight`. The code constructs SVG elements programmatically via `document.createElementNS` and sets attributes directly, demonstrating a minimal approach to generative art.