Hi! I have a question about triggers and blocking them from being clicked when they scroll behind a fixed element like a nav bar.

For instance, I have a mobile app with a fixed header and footer nav bars. Some of the pages, however have vertical scrolling. On those pages, the content will scroll beneath the header/footer nav bars as it should. But, when a prototype trigger (overlay, link, etc) is beneath the nav bar. . . I can still click it. And that trigger shows up as a clickable area when you click outside of the prototype.

Is there any way to make the header/footer nav bars opaque (for lack of a better way to say it) so that you cannot click any triggers underneath?

Here is a link to the prototype if you want to look: