H&D features a Fullscreen Popup by using DT Fullscreen Modal, here’s how you can create one :

Step 1 – Create a button that links up to an anchor in this case we’re going to use a DT-button on a text box and name the anchor link “/request-quote/” like this :

Step 2 – add a DT-Fullscreen Modal element on the page

Step 3 – on the Fullscreen Modal Settings add the anchor link you’ve made earlier. after that just fill the fulscreen modal with the design you need