JSFiddle - React, Tailwind, and code Playground

by majikarikeruo

HTML

<div>
  <p>こんにちは</p>
</div>

<hr>

<div>
  <p>こんにちは</p>
  <p>さようなら</p>
</div>

CSS

p:only-child{
  color:red;
}