Hey OP, just wanted to let you know - the animation is making a horizontal scrollbar appear and disappear at the bottom of the page.
What I think is happening is that as .limo-container (which is 100% of page width) rotates, its "real" bounding box is expanding and contracting ever so slightly. Just open the devtools and focus on that div, you'll get it immediately.
(I'm on Chromium 57.0.2987.98 (Developer Build) on Linux, FWIW.)
Nice ride, I was expecting worse until I clicked through... A few years ago I hired a van to move some stuff and the hire place was like a scrap yard for limos. As they say, 'never meet your heroes', but I was to look on limousines differently after seeing them like beached fibreglass whales, with the elements having taken all the polish off. I am glad to see you are keeping yours in deluxe standard.
As of iOS 9 (I think) the native Facebook login opens a safari view inside the app. Signing in once will remember you for any other apps. They got rid of the app switch.
I got rid of Facebook login for this reason... annoying updates. I even tried installing their new SDK with examples and it was still broke. I'll just stick with the others until they decide not to work.
I hear you on the Facebook login issue. I misconfigured the Facebook SDK and it's falling back to a web view rather than using native login.
I just pushed an over-the-air update to remove Facebook login entirely for now.