You signature says 4.2 and 4.1 - Is that what version you are asking about? The below is most helpful for 4.4
This could be very easy, but I would need to see what you are talking about to help. If you know the minimum height you would like the specific CSS block, then on the CSS file just add:
Code:
.whatever {
min-height: 600px
}
However, you might need to learn about the faux-column CSS technique, or you might simply need a <div class="clearing"> </div> above or below the closing </div> of the element you are trying to stretch.