change page navigation

lib/pages/main/home_page.dart

@@ -256,8 +256,9 @@ class _HomePageState extends State<HomePage> {
 
     final shipmentCostBtn = TaskButton("rate",
         icon: FontAwesomeIcons.calculator,
-        btnCallback: () =>
-            Navigator.of(context).push(BottomUpPageRoute(ShipmentRates())));
+        btnCallback: () => Navigator.of(context).push(CupertinoPageRoute(
+              builder: (context) => ShipmentRates(),
+            )));
 
     final fcsShipmentBtn = TaskButton("FCSshipment.title",
         icon: Ionicons.ios_airplane,
@@ -373,7 +374,7 @@ class _HomePageState extends State<HomePage> {
     );
     final signinBtn = FlatButton(
       onPressed: () {
-        Navigator.of(context).push(BottomUpPageRoute(SigninPage()));
+        Navigator.of(context).push(CupertinoPageRoute(builder: (context) => SigninPage()));
       },
       child: Text(
         "Sign In",
@@ -530,10 +531,11 @@ class _HomePageState extends State<HomePage> {
       }
       Navigator.push(
         context,
-        BottomUpPageRoute(PackageInfo(
-          package: package,
-          isSearchResult: true,
-        )),
+        CupertinoPageRoute(
+            builder: (context) => PackageInfo(
+                  package: package,
+                  isSearchResult: true,
+                )),
       );
     } catch (e) {
       showMsgDialog(context, "Error", e.toString());

lib/pages/main/welcome_page.dart

@@ -86,8 +86,8 @@ class _WelcomePageState extends State<WelcomePage> {
                         ),
                         FlatButton(
                           onPressed: () {
-                            Navigator.of(context)
-                                .push(BottomUpPageRoute(SigninPage()));
+                            Navigator.of(context).push(CupertinoPageRoute(
+                                builder: (context) => SigninPage()));
                           },
                           child: Text(
                             getLocalString(context, "welcome.signin"),