Unwanted Remnant on Desktop Following Browsing With Safari
What is going on here? I was doing a bit of historical research using Safari. I concluded my research, quit Safari, only to find that I have this small remnant of the web page that I was looking at, still on my Desktop. I can't get rid of it ! It can't be selected, or dragged to Trash. When I try a Control-click, I get the same dialog box that I would get if I clicked anywhere on the Desktop - in other words, it's not of any use in getting rid of this artefact. Very strange ! Any suggestions as to how to go about getting rid of it?
I have - MacOS Big Sur 11.6.7
iMac 27″, macOS 11.6