Today I find a solution for one of the most common problems I had with CSS, vertical centering. I really don't like CSS, and one of my examples to explain why, it was the lack of a elegant way to vertical align an element inside a div.
First page I found was http://www.jakpsatweb.cz/css/css-vertical-center-solution.html that is a great post, that gets a solution but very very tricky.
Luckily while implementing that solution, I found a very is solution, described here: http://www.w3.org/Style/Examples/007/center.html
As easy as:
div.container {
display: table-cell;
vertical-align: middle;
}
I don't think that is very intuitive (at least for me), but it's simple.