The following code can be used to show the popup with close button in the HTML page. HTML: <div class=”popup-container” id=”popupContainer”> <p id=”popupMessage”></p> <button id=”closeButton” class=”btn btn-secondary” onclick=”hidePopup()”>Close</button> </div> CSS: .popup-container { display: none; position: fixed; top: 50%; … Continue reading Add popup with close button in the HTML page