JSFiddle - React, Tailwind, and code Playground

HTML

<table>
  <tr>
    <td>nonono</td> <!-- FIND THIS -->
    <td>foobar</td>
  </tr>
  <tr>
    <td>nonono2</td> <!-- FIND THIS -->
    <td>foobar2</td>
  </tr>
  <tr>
    <td>nonono3</td> <!-- FIND THIS -->
    <td>foobar2</td>
  </tr>
</table>

JavaScript

$(function() {
    $('tr td:first-child').css('background','#5ae');
});