JSFiddle - React, Tailwind, and code Playground

HTML

<div class='ana'>Ana-1</div>
<div class='aciklama'>Açıklama -1</div>
<div class='ana'>Ana-2</div>
<div class='aciklama'>Açıklama -2</div>
<div class='ana'>Ana-3</div>
<div class='aciklama'>Açıklama -3</div>
<div class='ana'>Ana-4</div>
<div class='aciklama'>Açıklama -4</div>

CSS

div {width:300px; height:30px;border:1px inset;cursor:pointer}
.ana {background-color:yellow;}
.aciklama {background-color:gray;display:none}

JavaScript

$(".ana").live('click',function() {
   $(this).next(".aciklama").slideToggle(200);
});