JSFiddle - React, Tailwind, and code Playground

HTML

<div class="stackoverflow">
    Hi there!
</div>

CSS

.stackoverflow {
  background-color: aqua;
  width: 300px;
  height: 20px; 
}

JavaScript

$('.stackoverflow').click(function() {
  do_hide.call(this); 
});

var do_hide = function()
{  
  is_anim = true;  
  $(this).animate({
    opacity: 0.25,
    height: 'toggle',
    width: 'toggle'
  }, 5000, 
                 function() {
                   is_anim = false;
                   this.hide();
                 });
}