breakpoints property
A breakpoint is the range of predetermined screen sizes that have specific layout requirements. At a given breakpoint range, the layout adjusts to suit the screen size and orientation.
Implementation
@override
Map<LayoutBreakpoint, double> get breakpoints => {
LayoutBreakpoint.xs: 0,
LayoutBreakpoint.sm: 576,
LayoutBreakpoint.md: 768,
LayoutBreakpoint.lg: 992,
LayoutBreakpoint.xl: 1200,
};