Resolved How to decrease the gaps between modules in a row

Hi

I want to decrease the gaps between modules, I tried modifying the bootstrap css files but no luck.

for example I have a 3 modules in a row: Mod1(Span 6) Mod2(Span 2) Mod3(Span 4)

I have added contents in 3 modules, Now I want to reduce the white space between these modules, there is lot of white space between these, gap is more. I want ti make it 10px gap. I have attached screen for reference.

Thank You