JSFiddle - React, Tailwind, and code Playground

HTML

<div> first </div>
<div class='unhighlightable-text'> second </div> 
<div> third </div>

CSS

.unhighlightable-text {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}