JSFiddle - React, Tailwind, and code Playground

HTML

<table id='widgetstable'>
    <tr>
        <td>Me</td>
    </tr>
  <tr>
    <td>
      <table>
        <tr><td>Not Me</td></tr>
      </table>
    </td>
  </tr>
</table>

CSS

td {
    background-color: blue;
}

JavaScript

$("#widgetstable > tbody > tr > td").css('background-color', 'red');