JSFiddle - React, Tailwind, and code Playground

HTML

<div>
   This text can not be seleced
</div>

CSS

div{
-webkit-touch-callout: unset;
-webkit-user-select: unset;
-khtml-user-select: unset;
-moz-user-select: unset;
-ms-user-select: unset;
user-select: unset;
}