JSFiddle - React, Tailwind, and code Playground

by ko echos

HTML

<button>set</button>
<div>
    <span class='sss'><p>111</p></span>    
</div>

CSS

div > span:not(.different) > p {color:red;}

JavaScript

$(function(){
    $('button').click(function(){        
        $('div').append('<span class="sss"><p>222</p></span>');
    });
});