navigation button disappearing only in Chrome

[Captainkewl]

Hey guys. If you go here: http://www.classcleanservices.com/ and then click on the "services" button, everything works fine in all browsers EXCEPT Chrome. In Chrome when I click on the "services" button, the "about us" button disappears. Can someone confirm it is happening to them as well in Chrome, and if so, how come?

Thanks

[Fang]

No problem in Chrome