Decrease size for convenience

ui/App.qml

@@ -12,9 +12,9 @@ QtMvvmApp {
     onHeightChanged: Const.heightRatio = mvvmApp.height / Const.windowHeight
 
     Component.onCompleted: {
-		width =  Const.windowWidth
+        width = Const.windowWidth / 1.3
-		height = Const.windowHeight
+        height = Const.windowHeight / 1.3
         x = (Screen.width - width) / 2
-		y = (Screen.height - height)
+        y = (Screen.height - height)
     }
 }