Blog photo gallery plugin reccomenation/group box clearup

Hey folks!

I wanted to see if anyone can recommend a good image plugin for blog posts. I installed one but it seems to not work.

Also can anyone offer insight on how to fix the white boxes displayed in the group discussions..here is a snapshot:

https://www.facebook.com/photo.php?fbid=10217196007308980&set=a.3713231466083&type=3&theater

Thank ya xoxo

Mekaboo