Burger Menu/Standard Menu Option

Hey, Avery  Thank you for submitting to our Feature requests!

The system automatically generates a dropdown menu for your website on mobile view as it is the best scenario for mobile navigation, to use a so-called burger menu. And if you want to make adjustments on to the burger menu icon on Mobile view, you’d better switch the Navigation menu mode from Standard to Burger, apply the desired changes on the menu icon and switch it back to Standard. 

You can learn more here.