JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    Click 1
    <li>1.1</li>
</ul>

<ul>
    Click 2
    <li>2.1</li>
</ul>

CSS

li{
display:none;
}

JavaScript

$(document).ready(function () {  
           $('ul').click(function(){
            $(this).children('li:first').slideToggle(300);
        });
});