JSFiddle - React, Tailwind, and code Playground

by prometh

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<div id="parent">
 <input type=radio />
   <div>
      <input type=radio />
   </div>
   <div>
      <input type=radio />
   </div>
   <div>
      <input type=radio />
      <div>
         <input type=radio />
         <div>
            <input type=radio />
         </div>
      </div>
   </div>
</div>

CSS

input[type=radio].a::after {
  content: "yay";
}

JavaScript

const firstInput = $('#parent input').get(0);
const firstLevelInputs = $(firstInput).parent().children('input');

firstLevelInputs.addClass('a');