Navigation Bar Glitching

I modified the WordPress theme: “Landscape” early March to create my own personal website. Two days ago, I checked it again and realized that the navigation bar was glitching. One of the links to a page was floating above the rest. I had not done anything to the code since I first got my site up and it was working perfectly then. When I previewed the unmodified Landscape theme again, this glitch also occurred. I also realize this only happens in Google Chrome.

I was wondering if anyone else had this problem or if anything can be done to fix this. I would really appreciate the help. Thanks!