column and content height

I started from scratch a template with sparky. I have problem with right column and condent height.
I can't adjust the height to meet one another. I mean, if lets say the right column height for a page is let's say 1000px, then the main content must expand to meet this height (or vice versa).
Any idea to resolve this?
I'm novice with joomla-sparky.
thanks

You can use min-height to define minimal height for those module positions that would be quickest solution second solution would be something using javascript which would be basically be dynamic version of first solution that will find position with biggest height and set min-height of all positions to that value

Maybe i wasn't accurate with my problem
see the below links
www.kalentzi.gr/index.php
(this is right)

www.kalentzi.gr/index.php/landmarks/nature
(this is wrong. The right column should expand verticaly with gray color)

Put this at bottom of template_css.css:

.mp_right {
min-height:1520px;
}