A yellow circle face with black eyes and animated eyebrows blinks periodically in an SVG. The example demonstrates D3 v7 selections and transitions, using `select` to target the SVG and `append` to build the face from circles, rectangles, and an arc-based mouth. Eyebrows move via chained `transition` calls with `duration`. The code imports `select` and `arc` from the D3 module loaded via UNPKG, rendering entirely in SVG.