JSFiddle - React, Tailwind, and code Playground

HTML

<div class="article">
    <h1>TITLE 1</h1>
    <div class="content">content 1</div>
</div>
<div class="article">
    <h1>TITLE 2</h1>
    <div class="content">content 2</div>
</div>
<div class="article">
    <h1>TITLE 3</h1>
    <div class="content">content 3</div>
</div>
<div class="article">
    <h1>TITLE 4</h1>
    <div class="content">content 4</div>
</div>

CSS

.content{
 display:none;
 margin: 10px;   
}

h1{
    font-size: 16px;
    font-wieght: bold;
    color: gray;
    border: 1px solid black;
    background: #eee;
    padding: 5px;
}
h1:hover{
 cursor: pointer;
 color: black;   
}

JavaScript

$("h1").on("click", function(){
    console.log($(this).children("div"));
    $(this).siblings("div.content").slideToggle();
});