JSFiddle - React, Tailwind, and code Playground

HTML

<div id="flip">Click to slide down panel</div>
<div id="panel">Hello world!</div>

CSS

#panel,#flip
{
padding:5px;
text-align:center;
background-color:#e5eecc;
border:solid 1px #c3c3c3;
}
#panel
{
padding:50px;
display:none;
}

JavaScript

$(document).ready(function(){
  $("#flip").click(function(){
    $("#panel").slideDown("slow");
    $(this).hide("slide", { direction: "left" }, 1000);
    $(this).show("slide", { direction: "left" }, 1000);

  });
});