For some reason the hamburger icon won’t open up on either tablet and mob. I need to edit it, but it’s not opening up when I click the Show button for some reason. Please see 1 min video below:
Since your NavMenu div is nested inside of nav menu div, and nav menu div is set to display:hidden, NavMenu is also hidden. If you setnav menu div to block and try to show your menu again, it should work.