Prompt

Retain the colorful, retro large-letter aesthetic. The word OHIO dramatically expands and contracts in a playful, bouncy rhythm. Inside the large letters, the miniature scenes of the steamboats and cities slightly animate: smoke puffs from the boat's smokestack, and the river water gently ripples. The background sunburst slowly rotates like a grand vintage marquee, bringing a cheerful, touristy energy to the stamp.