Hi. Here is the code for popup.
<div id="your_unique_id" class="white-popup-block mfp-hide">
<div class="modal-inner-block">
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Id quasi nam minus voluptatibus totam culpa! Consequatur atque ipsum suscipit doloremque?</p>
</div>
</div>
<a href="#your_unique_id" class="sppb-magnific-popup sppb-modal-selector" data-popup_type="inline" data-mainclass="mfp-no-margins mfp-with-zoom">
Open popup
</a>
Replace your_unique_id on your own selector.
As well, you need to read the Magnific Popup documentation to change the content type that you need at the
data-popup_type="__" attribute .