<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title></title> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script> <link rel="stylesheet" href="css/myjQModal.css"> <style type="text/css"> * { box-sizing: border-box; } .modal-el { padding: 10em 7.5em; text-align: center; } </style> </head> <body> <div id="background"></div> <button data-action="open" data-target="#modal"> open modal! </button> <div class="modal-el" id="modal"> <button data-action="open" data-target="#modal2"> open modal! </button> This is the first modal! </div> <div class="modal-el close-on-click" id="modal2"> This is the second modal! </div> <script id="handyModal" data-initialize src="js/handyModal.jquery.js"></script> </body> </html>