This example reproduces a Sol LeWitt-inspired drawing using two SVG masks to create inverse color effects. It shows a grid of horizontal and vertical black bars that intersect around a central circular area, where the bars appear inverted. The code builds the visualization entirely with SVG elements and the `createElementNS` API, defining two masks—one with a black rectangle and white circle, the other with a white rectangle and black circle—to control which bars display in each region. The bars are generated programmatically in loops, with no external libraries or data sources.