Internet pages now have top/bottom border. How do I get rid of it?

I don't know what my wife did, but after she used my laptop tonight, I now have an annoying border at the top and bottom of my internet page (see attached image). The border is of my desktop background. I can't find any information as to how to get rid of this border and have tried several things. For what help it may be:
1: My screen is maximized
2: My scaling is set to full screen (not aspect ratio)
3: Hitting F11 does rid of the problem, but I don't want to hide my task/tool bars while viewing in full screen.
4: I can't seem to drag the internet page to make it bigger

Any suggestions as to how I can once again view a full screen and still see my task/tool bars? I simply want to get rid of the desktop background that I see at the top and bottom of the page.

Thanks Brink. Turning off the transparency helped, but it still looks like too much of a border at the top. It just doesn't seem like I have had so much border in the past. I'll run with it for now and probably get use to it over time.