Welcome to Sitepoint, TheSchock.
I dont see any rules for the classes or IDs you have used in you content area. Make sure WP is importing those.
Also note, tho I didnt do a thorough check of your actual implementation , that CSS rules are case sensitive. That is "Wp-css-rule" is not the same as "wp-css-rule". Rule names must match EXACTLY in the CSS and the markup.