[JSWolf]

Originally Posted by icearch

I think class really doesn't take that much space, so no harm to use when needed. If I want to not use this feature, there would just be more hassle I think.

In fact, just to my own preference, even most p in my book needs 2em indent, I still use class to let them indent, just because i need some p to be not affected.

The p you don't want a 2em indent, you just put in what sort of indent you want in the class. As you can see, the first paragraph after the </h2> is not indented. The second paragraph is indented. Also, if you use the class noindent, you'll do away with the indent. So your main paragraph style can be without a class.

HTML code

<h2>CHAPTER 1</h2>
<p>There were four black and whites already at the 7-Eleven when I arrived. Several people had gathered in the parking lot behind the yellow police tape, huddling close for protection against the freezing Chicago rain.</p>
<p>They weren’t there for Slurpees.</p>

CSS code

p {
  margin-top: 0;
  margin-bottom: 0;
  widows: 1;
  orphans: 1;
  text-indent: 1.2em;
}
h2 + p, .noindent {
  text-indent: 0;
}