Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  <fieldset>teste</fieldset>
  <fieldset class="teste">teste</fieldset>
  <fieldset>teste</fieldset>
  <fieldset class="teste">teste</fieldset>
  <fieldset class="teste">teste</fieldset>
  <fieldset class="teste">teste</fieldset>
  <fieldset>teste</fieldset>
  <fieldset class="teste">teste</fieldset>
  <fieldset class="teste">teste</fieldset>
  <fieldset class="teste">teste</fieldset>
  <fieldset class="teste">teste</fieldset>
  <fieldset>teste</fieldset>
  <fieldset class="teste">teste</fieldset>
  <fieldset class="teste">teste</fieldset>
</div>

JavaScript

$('fieldset').filter(':not([class])').css('color','red');

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JSFiddle - React, Tailwind, and code Playground

HTML

JavaScript

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