ttps://www.w3schools.com/howto/howto_css_modals.asp code example
Example 1: how to make popup modal in jquery with example
<!-- AJAX response must be wrapped in the modal's root class. -->
<div class="modal">
<p>Second AJAX Example!</p>
</div>
Example 2: how to make popup modal in jquery with example
$('#sub-modal').modal({
closeExisting: false
});