Vertical centering overflow

[crsaracco]

I'm not sure if it's just the way you wrote it or if it's a flexbox issue, but the vertical centering box will overflow the container box if it's too big (tested in firefox and chrome):

http://i.imgur.com/PP3HB1z.png

Again I didn't really look too far into it at all, I just tried this on the page and reported it, so sorry if this is by design.

[philipwalton]

Yeah, this used to not be a problem because I was using min-height instead of height in these examples, but then I discovered this IE bug where flexbox wasn't playing nice with min-height, so I converted the examples to use height as a compromise. But as you point out, it has this negative side effect.

I'll see if I can find a way to only use height for IE, which should fix this issue.

[philipwalton]

This should be fixed in b734f80. Let me know if you're still seeing issues.