In Astra Theme, the default header breakpoint is 921px. That means mobile header will be triggered at 921px screen size.
To change the default header breakpoint, edit the
astra_header_break_point in a child theme. In the example below, the mobile header will be triggered at 1120px screen size. Change
1120 to the screen size of your choice.
/** * Change the breakpoint of the Astra Header Menus * * @return int Screen width when the header should change to the mobile header. */