Hey sorry for the confusion,
find the links below since its also easier to track the css.
The second css script you sent didnt work for me at the NEWs and @SYNYO secion (Link one). But I solved it with Portfolio feature size

But such fix can not be applied at the Projects page (link 2). Its not a matter of post margins anymore. How can I decrease the space between images?

thanks

It worked fine for the post-slide.
What about the 4 column rows? any trick for decreasing the margin?