Using CSS Styles in Posts

[محروم.كوم]

Can you use certain styles you saved in the "Additional CSS Definitions"in your posts?
For example, I would like to posts something like:

This is the Title
And this is the rest of the paragraph in default style......

When I do it it does not work. Am i doing something wrong, or it just cant be done?


Thanks! __DEFINE_LIKE_SHARE__