Add LitBoxShadows

lib/src/styles/lit_box_shadows.dart

@@ -0,0 +1,34 @@
+import 'package:flutter/material.dart';
+
+/// A collection of [BoxShadow] objects that can be used as decoration.
+class LitBoxShadows {
+  /// A [BoxShadow] that can be applied on smaller elements.
+  static const List<BoxShadow> sm = const [
+    const BoxShadow(
+      offset: Offset(-2.0, 2.0),
+      blurRadius: 4.0,
+      color: Colors.black26,
+      spreadRadius: -1.0,
+    )
+  ];
+
+  /// A [BoxShadow] that can be applied on medium-sized elements.
+  static const List<BoxShadow> md = const [
+    const BoxShadow(
+      offset: Offset(-3.0, 3.0),
+      blurRadius: 4.0,
+      color: Colors.black38,
+      spreadRadius: -2.0,
+    )
+  ];
+
+  /// A [BoxShadow] that can be applied on larger elements.
+  static const List<BoxShadow> lg = const [
+    const BoxShadow(
+      offset: Offset(-4, 4),
+      blurRadius: 6.0,
+      color: Colors.black38,
+      spreadRadius: -2.0,
+    )
+  ];
+}

lib/styles.dart

@@ -7,3 +7,4 @@ export 'src/styles/lit_colors.dart';
 export 'src/styles/lit_text_styles.dart';
 export 'src/styles/lit_sans_serif_styles.dart';
 export 'src/styles/lit_serif_styles.dart';
+export 'src/styles/lit_box_shadows.dart';