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lib/theme/decorations/app_shadows.dart

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+
+import 'package:flutter/material.dart';
+
+///阴影卡片
+final shadowDecoration = BoxDecoration(
+  border: Border.all(color: Colors.black, width: 2),
+  borderRadius: BorderRadius.circular(5),
+  color: Colors.white,
+  boxShadow: const [
+    BoxShadow(
+      color: Color(0xffb5b5b5),
+      blurRadius: 2,
+      offset: Offset(6, 6),
+      spreadRadius: 0,
+      blurStyle: BlurStyle.normal,
+    ),
+  ],
+);