JSFiddle - React, Tailwind, and code Playground

HTML

<div class='Imagecontainer'>
    <div>
        <button onclick='Animate()'>SomeText</button>
    </div>
    <div class='Hidden'>Hidden Div</div>
</div>
<div>Thiss will be pushed down</div>

CSS

.Hidden
{
    display:none;
    background:black;
    color:white;
    width:200px;
    height:300px;
}
.Imagecontainer
{
    min-height:100px;
}

JavaScript

function Animate()
{
 $(".Hidden").slideDown(1000);   
}