Font size doesn’t work in siteorigin

Hi!

I got feedback that the font size for paragraphs was too small in my wordpress theme, so I changed it under appearance/theme/custom css like so:

p {font-size: 16px;}

It works perfect in regular posts (for ex: http://sandranicole.se/vintage-guide-tips-paris/) but not in posts where I use the page builder plugin (for ex: http://sandranicole.se/january-wishlist/) it does works in the plugin when I use lists.

Does anyone know what I can do to change it? :)

Thanks in advance,

Sandra