This interactive SVG reproduction of Sol LeWitt’s wall drawing uses masked striped rectangles to create a checkerboard pattern overlaid with a central circular window. The page renders 100 horizontal and 100 vertical stripes, each 10 pixels thick, layered across the full viewport. Two SVG masks—one with a white circle on black, the other inverted—selectively reveal stripes inside or outside the circle, mimicking the artist’s geometric style. A CSS hover transition on the circular area changes its fill to green over three seconds, adding subtle interactivity.