JSFiddle - React, Tailwind, and code Playground

HTML

<div class="more-btn">Читать далее...</div>
<div class="more">
Привет
<div class="hide-content">Скрыть</div>
</div>

CSS

.more {
display: none;
}

JavaScript

$('.more-btn').click(function(){

	$('.more').slideDown();

});

$('.hide-content').click(function(){
	
	$('.more').slideUp();
})