The effect I'm looking for in the end is to have the first line in some paragraphs bolded. These would be the first paragraph of each section in my post. This kind of effect is used on this Bloomberg.com post. Notice the first paragraph in the post and then also the first paragraph of later sections of the post are bolded. The way they accomplished this was to have a particular class ("section-break" in their post) applied to the paragraphs they wanted this effect on, and then using the ::first-line css pseudo class, applying it to the paragraphs with the "section-break" class.
I can set up the css to do that what they did; the only thing I'm struggling with his how I can delineate, while writing my post, which paragraphs would be the beginning of a new section and so would need to have their own "section-break" class. Is there a built in way to do this? And if not how might I be able to hack it in?