This example reproduces a Sol LeWitt-inspired drawing using the raw SVG API and the DOM’s `createElementNS` method. It renders 100 horizontal and 100 vertical gray rectangles in a grid, with all horizontal bars clipped by a circular mask applied via an SVG `<mask>` element. The mask, centered on the viewport, reveals only the horizontal strokes inside its 200-pixel radius while the vertical bars remain fully visible, creating a layered geometric pattern. The visualization uses `window.innerWidth` and `window.innerHeight` to size the full-screen canvas.