JSFiddle - React, Tailwind, and code Playground

HTML

<div class="Non-Select" unselectable="on">
   <h2>Title</h2>
   <input name="title" type="textbox" />
</div>

CSS

[unselectable="on"]{
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none
}