JSFiddle - React, Tailwind, and code Playground

HTML

<div id="main">

<div id="1"><div>Some text in paragraph 1</div><div>Some text in paragraph 1</div></div><br>
<div id="2"><div id="3">Some text in paragraph 2</div><div>Some text in paragraph 1</div></div><br>
<div id="3"><div>Some text in paragraph 3</div><div>Some text in paragraph 1</div></div><br>

</div>

CSS

div {
  background-color:#fff;
}

JavaScript

$('#main div').not('#2>#3').each(function() {
    $(this).css('background-color', 'blue');
});