This example reproduces a Sol LeWitt-style geometric composition using HTML and SVG, showing a grid of horizontal and vertical lines that intersect within circular masks to create a layered visual effect. Two SVG masks define the visibility regions: one reveals a circle of horizontal stripes, while the other selectively hides vertical stripes within a matching circle. The code programmatically builds the SVG structure using the `createElementNS` API, generating 100 horizontal and 100 vertical rectangles with alternating mask references. No external libraries are used; the rendering relies entirely on native SVG elements and attributes.