credit.txt

Adapted from https://upload.wikimedia.org/wikipedia/commons/0/0a/Clouds_Cute_for_CSS_sprites.svg and https://cdn.pixabay.com/photo/2014/05/18/00/22/cloud-346645_960_720.png (both labeled for noncommercial reuse with modification)

The grumpy face was also from an image that I found with a Google image search under noncommercial reuse with modification, but I cannot seem to find it again. The search was for "angry smiley". I take no credit for the grumpy face.