It works but it keeps unhiding the element. I want to hide the safesearch is on and it does for a bit then it pops back up. When I hid it with ublock it worked much better(but I had to remove that from the browser for issues with it).

Ps this is to stop a dementia patient from spending ALL day with porn. He's in a much better mood when he just spending his time watching tv shows and movies on the streaming service.