JSFiddle - React, Tailwind, and code Playground

HTML

<div contenteditable="true">
  <p>
    Line 1 <span title="action">action</span>
  </p>
</div>

CSS

div {
  width: 200px;
  height: 200px;
  border: 1px solid #f1f2f3;
}
p span {
  background: #ccc;
}