Fed up with the useless, obnoxious, and prefers-reduced-motion disobeying "AI overview" boxes on Google, I devised this uBlock Origin filter that hides them:
www.google.com##h1:has-text(/^AI overview$/):upward(div)
Add it under My filters in the uBlock Origin dashboard and the boxes disappear. (At least until gooble decides to change their HTML.)