getContainerWidth static method
returns a container width based on the passed breakpoint "": -1, because must be generated sm: 540, md: 720, lg: 960, xl: 1140, xxl: 1320,
Implementation
static double getContainerWidth(String key) {
if (!breakPointLabels.contains(key)) {
throw FormatException(
"BSBreakpoint:\nPassed key '$key' is invalid, must be:\n${breakPointLabels.toString()}");
}
return containerWidths[key]!;
}