There is a window requesting that I click on a box to get further info - presumably something they want to sell me. There is only the one box to click and I have not done so.
On the pull down safari menu, all of the options are grey except Quit Safari. Re-set safari is in grey.
I can also close the offending window by Force Quitting Safari.
some text but I don't recall what it said and I am not at my computer.