Cant Fix White Gap Below Caption

Hey guys

I have been messing around with editing my CSS for my site but when I view the page source it seems that my pages are not picking up my changes.

This is my CSS file…

[huge amount of CSS moderated – no need to post CSS as all CSS can easily be retrieved from the link to your site; alternatively use the pastebin to share the code]

Note i have set the bottom margins to 0 under the wp-caption bit.

Then when i view the source i see it is referring to something else…check out the pic of Steph Curry on this post.

https://beerhealer.com/index.php/2016/03/15/little-guys-taking-beer-supermarkets/

Hopefully you guys can help me?

Cheers

Chris