This component uses Transforms (Move Down 100%) to hide and show modal (on Tablet) so that filters apply once the user hits the apply button (optimal UX). Using the display: hidden will prevent the apply button from working.
To show and hide the modal for editing purposes on Tablet:
Select the filters1_filters-wrapper inside the parent div filters1_layout div.
Hit the Hide button and it will show (yes this is counterintuitive).