JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li class="unselectable">unselectable</li>
    <li>selectable</li>
    <li>selectable</li>
    <li class="unselectable">unselectable</li>
    <li>selectable</li>
</ul>

CSS

.unselectable {
   -moz-user-select: -moz-none;
   -khtml-user-select: none;
   -webkit-user-select: none;
   -o-user-select: none;
   user-select: none;
   }