JSFiddle - React, Tailwind, and code Playground

HTML

<div id="#TEST10" style="display: none;">
                                    HEYYYY!
                                    <br />
                                    <br />
                                    heyyyyy!
                                    </div>

<div style="margin-bottom: 10px;">
                                    <a href="#" onclick="jQuery.facebox({ div: '#TEST10' }); return false;"><input type="checkbox" name="AgreeToRequirements" /></a>Open Facebox By Checking The Box
                                    </div>

<br />
<br />
<br />

CSS

#facebox {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 100;
  text-align: left;
}


#facebox .popup{
  position:relative;
  border:3px solid rgba(0,0,0,0);
  -webkit-border-radius:5px;
  -moz-border-radius:5px;
  border-radius:5px;
  -webkit-box-shadow:0 0 18px rgba(0,0,0,0.4);
  -moz-box-shadow:0 0 18px rgba(0,0,0,0.4);
  box-shadow:0 0 18px rgba(0,0,0,0.4);
}

#facebox .content {
  display:table;
  width: 370px;
  padding: 10px;
  background: #fff;
  -webkit-border-radius:4px;
  -moz-border-radius:4px;
  border-radius:4px;
}

#facebox .content > p:first-child{
  margin-top:0;
}
#facebox .content > p:last-child{
  margin-bottom:0;
}

#facebox .close{
  position:absolute;
  top:5px;
  right:5px;
  padding:2px;
  background:#fff;
}
#facebox .close img{
  opacity:0.3;
}
#facebox .close:hover img{
  opacity:1.0;
}

#facebox .loading {
  text-align: center;
}

#facebox .image {
  text-align: center;
}

#facebox img {
  border: 0;
  margin: 0;
}

#facebox_overlay {
  position: fixed;
  top: 0px;
  left: 0px;
  height:100%;
  width:100%;
}

.facebox_hide {
  z-index:-100;
}

.facebox_overlayBG {
  background-color: #000;
  z-index: 99;
}

JavaScript

/*
 * Facebox (for jQuery)
 * version: 1.3
 * @requires jQuery v1.2 or later
 * @homepage https://github.com/defunkt/facebox
 *
 * Licensed under the MIT:
 *   http://www.opensource.org/licenses/mit-license.php
 *
 * Copyright Forever Chris Wanstrath, Kyle Neath
 *
 * Usage:
 *
 *  jQuery(document).ready(function() {
 *    jQuery('a[rel*=facebox]').facebox()
 *  })
 *
 *  <a href="#terms" rel="facebox">Terms</a>
 *    Loads the #terms div in the box
 *
 *  <a href="terms.html" rel="facebox">Terms</a>
 *    Loads the terms.html page in the box
 *
 *  <a href="terms.png" rel="facebox">Terms</a>
 *    Loads the terms.png image in the box
 *
 *
 *  You can also use it programmatically:
 *
 *    jQuery.facebox('some html')
 *    jQuery.facebox('some html', 'my-groovy-style')
 *
 *  The above will open a facebox with "some html" as the content.
 *
 *    jQuery.facebox(function($) {
 *      $.get('blah.html', function(data) { $.facebox(data) })
 *    })
 *
 *  The above will show a loading screen before the passed function is called,
 *  allowing for a better ajaxy experience.
 *
 *  The facebox function can also display an ajax page, an image, or the contents of a div:
 *
 *    jQuery.facebox({ ajax: 'remote.html' })
 *    jQuery.facebox({ ajax: 'remote.html' }, 'my-groovy-style')
 *    jQuery.facebox({ image: 'stairs.jpg' })
 *    jQuery.facebox({ image: 'stairs.jpg' }, 'my-groovy-style')
 *    jQuery.facebox({ div: '#box' })
 *    jQuery.facebox({ div: '#box' }, 'my-groovy-style')
 *
 *  Want to close the facebox?  Trigger the 'close.facebox' document event:
 *
 *    jQuery(document).trigger('close.facebox')
 *
 *  Facebox also has a bunch of other hooks:
 *
 *    loading.facebox
 *    beforeReveal.facebox
 *    reveal.facebox (aliased as 'afterReveal.facebox')
 *    init.facebox
 *    afterClose.facebox
 *
 *  Simply bind a function to any of these hooks:
 *
 *   $(document).bind('reveal.facebox', function() { ...stuff to do after the facebox and contents are...