I have a minor suggestion that I feel would improve usability for people who regularly use both the mobile and desktop layouts.
On mobile the order of links on the right hand side is help, login, register. On the desktop layout it is register, login. The swapping of the order of the login and register links makes me more likely to click the wrong one, particularly on small screens. I think that making the order consitent between the two layouts would be a good idea.