A horizontal sequence of semi-transparent rectangles forms a striped pattern across the screen, with a circular mask revealing only the central region. The visualization uses raw SVG DOM manipulation via `document.createElementNS` and `setAttribute`, creating 100 rectangles positioned at increasing y-coordinates. A white circle and rectangular mask define the visible area, while the remaining stripes fade into the background. No external libraries are used; the code relies solely on native browser APIs for rendering.