How can I darken the site when the off-canvas menu is open and activated? This provides a nice effect where the focus is on the nav menu after it's pressed.
The off-canvas nav menu and site right here are a perfect example. Notice how the background darkens on the main site when the hamburger button is pressed. If you inspect the element, there appears to be a div with an ID of "menu-overlay" that's making this effect possible.
Is this something that can be done in Webflow?