I have a client who wants their header to have the sticky disappear/reappear effect as demonstrated on this site: https://sleepopolis.com I guess this is a Generate Press setting or effect. I created the header for the client site in Elementor as a header template. But in order to achieve this effect, is there someplace that I can place the header shortcode in Generate Press and apply that GP sticky header effect? What do you suggest? Or is there some CSS code I could drop into the site to do the same thing?