Hi Chuck,

never had that problem. Can you make sure this behaviour is not caused by any other styling on the website? For example another content editor webpart with js/css inside or the master page and it's related css could cause such behaviour.

Did you have a look at your browsers developer tools? Any useful information there?

Regards

Philipp

I checked all of that and did not see anything.  I changed the border and the background color as a workaround.