How to remove the spacing between the line and the content?

How to remove the spacing between the line and the content?

Working on the latest Wordpress Project - couldn't find a way to remove
the spacing between the line and the post.
H1 was removed already, leaving the page with nothing but the content.
I've tried to dig in the code and altering a few commands but didn't find
the solution so I'm addressing this site.
Theme: Decode, version 2.7.6
Visual thing: http://i.stack.imgur.com/Y1cqA.jpg
Will provide the actual code if needed.
Thanks in advance and have a nice day onwards.
Schiva