help - howto remove bottom padding of page/post ?

I cannot solve this one on my own.

How may we remove bottom padding from pages, see example here hdsoundlab

What we have done:

1. Body, text & links: padding-bottom: 2px;

2. style post & pages / body:
margin: 3px 0px 0px 0px

Still the bottom margin/padding remains as seen.

Thanks for any help!

rgds
chj