In an attempt to control the preview of my site shown by Facebook when my URL is posted, I added CSS body element. Apparently bad advice and I can't find the website I got it from. This needs to be found and deleted.

I used Inspector, found what I thought was it, deleted it, but it is still showing in preview.

Any help appreciated.

So your site is not on Facebook, you just want to post the URL to it there?

By Inspector, do you mean the one in your browser? It doesn't change the page on the server. You must delete what you added the same way you added it.