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.
*/
function your_prefix_change_header_breakpoint() {
return 1120;
};
add_filter( 'astra_header_break_point', 'your_prefix_change_header_breakpoint' );
Additional resources: