Sometimes just about everything is wrong with a given design, and saying so is the best way to express this.
In this case, it's pretty obvious that the nav buttons are uselessly large, the empty padding on either end is wasteful and annoying, the location mid-way down the page isn't practical, the color makes it blend in with the page's background, the drop down submenus make it awkward to find and get to the information being sought, the submenus are cluttered, and so forth.
The location is poor. The appearance is poor. The usability is poor. Using "horrible in almost every way" to describe it is very accurate and precise. It's just not the kind of thing that works after some minor tweaks; it all needs to be thrown away and redone using a different approach.