A fork of the classic sad emoji visualization animates a pair of eyebrows moving downward and upward in a continuous loop. The face is drawn as a yellow circle with black outlines, using D3 v7 to append SVG shapes. The animation relies on chained `transition()` and `duration(2000)` methods to move the `eyebrowsG` group, while the mouth is generated with the `d3.arc()` path generator. Static elements like eyes and face use `circle` and `rect` attributes, with all geometry derived from fixed pixel constants.