Hestia comes with a built in Max Mega Menu theme, so the first step is to go to Appearance > Menus > Max Mega Menu Settings and set the Theme to “Hestia”.

If you want to use the default Max Mega Menu theme instead, make sure you have set the Mega Menu > Menu Themes > Mobile Menu > Responsive Breakpoint option to 768px.

Mobile Menu

To make the mobile menu expand to the full width of the page, go to Appearance > Customize > Additional CSS and add the following:


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