I have problems with buttons style in Campaign theme of wordpress

Hello guys, i purchased the “campaign” theme for wordpress (http://www.tbdemos.org/campaign/) and I install the theme on mi server, but the look of the main menu it´s not the same of the demo (different style/look),

What can i do for let it like the demo?

Thanks a lot!!!

Have you tried contacting the author of that theme? Their support information is here.

Hope that helps!