This example reproduces a Sol LeWITT wall drawing using two circular SVG masks to create a grid of alternating horizontal and vertical black lines. The first mask reveals only the horizontal stripes within a centered circle, while the second mask applies the opposite effect, showing vertical stripes outside that same circular region. The code builds the scene entirely with native SVG elements—masks, rectangles, and loops—rendering crisp geometric patterns that mimic LeWitt’s instructional art, with no external libraries or data sources.