add Card

src/Shared/HandyControlDemo_Shared/Data/Model/CardModel.cs

@@ -0,0 +1,11 @@
+namespace HandyControlDemo.Data
+{
+    public class CardModel
+    {
+        public string Header { get; set; }
+
+        public string Content { get; set; }
+
+        public string Footer { get; set; }
+    }
+}