Automatic page height

Hello
First of all, thank you hotTeams for such a beautiful template!
Here is my question...
Is it possible to add minimum height on a main area?
When main area contains only few lines, its really annoying that it shrinks so much.
i added some pic..

Yes but i think this will work better for you:

.main_container_edge{
padding-bottom:40px;
}

put that at bottom of layout.css

Thank you so much Ivan..
it really helped a lot

there is still one liiiitle thingi when i press CART on website, can you take a glimpse on it: (pic included)
its not pretty at all

Thank you in advance

Send link so we can check

heloo
here it is.. www.wildbuild.fi/sisusta/

press cart for instance

when there is not much content, then in the bottom background image is seen..

it would be great if footer black area could be deeper (more height)

I add one product to cart , then click cn CART and I don't see that