Fluid Values
BreakifyFluidValue interpolates linearly between each pair of defined breakpoint values:
const spacing = BreakifyFluidValue( sm: 8, md: 16, lg: 24,);
final resolvedSpacing = context.resolve(spacing);Before the first defined point it uses the first value; after the last it uses the last. Use resolveRounded when the result should be rounded to the nearest logical pixel.

