ANNOYING RED LINE ON WEBPAGE

[M7MCQ]

Hi All,
Brand new user to Xara (and web designing).

I'm doing okay so far but I have a very annoying thin red line on my webpage when I go to preview the website.

In the web editor (Web Designer Premium V18) the red line is not visible. I have moved objects around out of the way to see if something is hidden behind an object, but I cannot find anything while in edit mode.

Any ideas?? Nothing technical, LOL.