Make the exit button in the menu hide if it can't be used there

Assets/Scripts/MainMenu.cs

@@ -6,10 +6,17 @@ public class MenuScript : MonoBehaviour
     public Button exitButton;
 
     void Awake()
+    {
+        if (!Application.isMobilePlatform || Application.isEditor || Application.platform == RuntimePlatform.WebGLPlayer)
+        {
+            exitButton.gameObject.SetActive(false);
+        }
+        else
         {
             exitButton.onClick.AddListener(() =>
             {
                 Application.Quit();
             });
         }
+    }
 }