A black canvas displays a single, expanding spiral of sixty translucent, outlined polygons. The shapes grow larger and shift position with each iteration, while their stroke colors cycle through the HSL color space, creating a vibrant, dynamic gradient. The visualization is built with raw JavaScript using the `document.createElementNS` method to generate SVG polygon elements, and it relies on the D3 library only for the initial page setup via `d3.select`. The code explicitly sets `fill-opacity` to zero, making the polygons hollow outlines.