CSS Question – Paragraph Formatting

I switched to a new theme recently and for some reason all of my paragraph formatting within my posts has gone away. I’m not yet savvy enough with CSS to know where I can fix this, so could anyone point me in the right direction in the CSS file where I can fix this?

Many thanks!

EDIT: Here is the link to my blog if it is helpful
http://www.genkigirl.com/dollyblog/