Actually this might just be a very general problem and not just affecting a few plugins. Still I'll name Nimble Portfolio and Awesome Filterable Portfolio because I noticed it with those first.
Nimble portfolio is supposed to create something like this:
But in my WordPress website it looks like this:
It's not because of my theme because I've tried numerous other themes including the default ones.
Any clue what's going on??
A working example: http://nimble3.com/portfolio, and my site where it doesn't work: http://ankit-arora.com/
I've been clueless with this problem for so many days now.