Flexbox column align self to bottom

Question

Im trying to use Flexbox. http://css-tricks.com/almanac/properties/a/align-content/ this shows nice alignment options; but i would actually want a Top-top-bottom situation.

Answer 1

Basically, the answer is to give to the last of the middle elements a flex grow 1 code as follows:

.middle-last{
  flex-grow: 1; // assuming none of the other have flex-grow set
}

Thanks, T04435.