Thank you, both!
I didn’t copy and paste and have no idea how did this happen.
I never paid attention to the ‘code’ tab before.
When I went there, I did see the tags that kimik0 mentioned, so I removed them, adn all is well now!
Live and learn, every day :)
My blog is doing exactly the same but I don’t know where the “code tag” is. Could someone please tell me where to look to see if I can also fix mine. I can’t even read peoples comments in their blogs because they are so small.