Falling leaves

The leaves are positioned against their nearest positioned ancestor, so drop the tag inside a relative overflow-hidden wrapper around the page's content. They drift in front of it, but never take a click, and under reduced motion they are not drawn at all. On a real page the wrapper is the full screen; here it is the render box.

count draws up to eight leaves. colour replaces their success colours with one text colour for every leaf, for a surface where the default green would not read.