update

lib/widgets/responsive_container.dart

@@ -0,0 +1,24 @@
+import 'package:flutter/material.dart';
+
+class ResponsiveContainer extends StatelessWidget {
+  final Widget child;
+  final double maxWidth;
+  final double maxHeight;
+
+  const ResponsiveContainer({
+    Key? key,
+    required this.child,
+    this.maxWidth = 600.0,
+    this.maxHeight = 1000.0,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Center(
+      child: ConstrainedBox(
+        constraints: BoxConstraints(maxWidth: maxWidth, maxHeight: maxHeight),
+        child: child,
+      ),
+    );
+  }
+}