html overflow 手机,HTML overflow-y

I've got a question with 100% height divs and overflow-y not working right in all browsers but Chrome...

I have everything working perfectly fine in Chrome, then I went to test in other browsers only to find that scrollbars were not showing and the div's are going past the browsers boundaries. I've tested with Opera, Firefox, and IE. I've spent many hours playing around with this and googling for answers.

Is there something I'm missing to make this work in the other browsers, or was I just lucky that I got it to work in Chrome? Any suggestions/help would be appreciated.