The fast_app brick includes a set of widgets and utilities for building responsive Flutter apps. This includes responsive layout widgets, breakpoints, and utilities for handling different screen sizes. For example, we include the Material Design breakpoints and a ResponsiveBuilder widget that allows you to build layouts that adapt to different screen sizes:

// https://m2.material.io/design/layout/responsive-layout-grid.html#breakpoints
class Breakpoints {
  static const double xs = 600.0; // Extra-small (phone)
  static const double sm = 905.0; // Small (tablet)
  static const double md = 1240.0; // Medium (laptop)
  static const double lg = 1440.0; // Large (desktop)
  static const double xl = 1920.0; // Extra-large (large desktop)
}