A nice mini game! I liked the concept and the theme interpretation. The UI does need a little work!
The itch page has the game window enlarged for Unity canvas by default. I like to change the canvas resolutions in Unity (match width and height slider to 0.5 and then in the player settings, setting the WebGL resolutions to half the canvas resolutions) so that the itch page gets rid of the horizontal scroll bar.
Good job on finishing the project!