fix: loading screen appearance

app/lib/pages/loading_page.dart

@@ -47,28 +47,28 @@ class _LoadingPageState extends State<LoadingPage>
     return Scaffold(
       body: Container(
         width: double.infinity,
-        decoration: const BoxDecoration( // Loading screen
-          gradient: LinearGradient(
-              colors: [Colors.grey, Colors.black],
-              begin: Alignment.topLeft,
-              end: Alignment.bottomRight
-          ),
+        decoration: BoxDecoration(
+          color: Colors.grey.shade900,
         ),
         child: Column(
-          children: [
-            Image.asset(
-              'assets/icons/frozen.png',
-              // Icon from: https://www.flaticon.com/free-icons/cold-water"
-              color: Colors.grey,
-            ),
-            const SizedBox(height: 20),
-            const Text(
-              "IceMap",
-              style: TextStyle(
-                  color: Colors.white70,
-                  fontStyle: FontStyle.italic,
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              Image.asset(
+                'assets/icons/frozen.png',
+                // Icon from: https://www.flaticon.com/free-icons/cold-water"
+                color: Colors.grey,
+                height: 300,
+                width: 300,
               ),
-            )
+              const SizedBox(height: 20),
+              const Text(
+                "IceMap",
+                style: TextStyle(
+                    color: Colors.white70,
+                    fontStyle: FontStyle.italic,
+                    fontSize: 30,
+                ),
+              )
           ]
         ),
       ),