Thanks @faramarz a lot for the try. I cannot say that it doesn't work; it definitely does. The thing is, this solution cannot be accepted as generic. I couldn't explain all the conditions in the twitter post; my mistake. But it was rather a sarcastic post. If someone would want to try for a generic solution:
1) Horizontal centering isn't necessary. So let the DIV width occupy all the available width.
2) The height cannot be fixed. The content can vary.<p>I doubt if there exist any solution to this. My point is, if we are talking about Clones, Moon, Rocket Science and HTML5, a simple thing like this is not possible even today. If CSS can offer margin: 0 auto; why can't it offer something to align elements vertically center? May be, margin: auto 0;???<p>@faramarz, once again, thank you very much for spending time on this.