JSFiddle - React, Tailwind, and code Playground

HTML

<div>
<div>
Test
</div>
<div class="comeback">
Come back!
</div>
<div>
Test
</div>
</div>

CSS

.hidden { display: none; }

JavaScript

$(function() {
	var $window = $(window),
    	$html = $('html');
	$window.on('mouseleave', function(event) {
    	if (!$html.is(event.target))
        	return;
        $('.comeback').removeClass('hidden');
    });
	$window.on('mouseenter', function(event) {
        $('.comeback').addClass('hidden');
    });
});