diff --git a/botcity/core/bot.py b/botcity/core/bot.py
index dbcdfda..10ce7f6 100644
--- a/botcity/core/bot.py
+++ b/botcity/core/bot.py
@@ -761,7 +761,7 @@ def get_element_coords_centered(
         height: Optional[int] = None,
         matching: float = 0.9,
         best: bool = True,
-    ):
+    ) -> Union[Tuple[int, int], Tuple[None, None]]:
         """
         Find an element defined by label on screen and returns its centered coordinates.
 
@@ -807,7 +807,7 @@ def browse(self, url, location=0):
     # Mouse
     #######
 
-    def click_on(self, label):
+    def click_on(self, label: str) -> None:
         """
         Click on the element.
 
@@ -819,7 +819,7 @@ def click_on(self, label):
             raise ValueError(f"Element not available. Cannot find {label}.")
         _mouse_click(self._mouse_controller, x, y)
 
-    def get_last_x(self):
+    def get_last_x(self) -> int:
         """
         Get the last X position for the mouse.
 
@@ -828,7 +828,7 @@ def get_last_x(self):
         """
         return self._mouse_controller.position[0]
 
-    def get_last_y(self):
+    def get_last_y(self) -> int:
         """
         Get the last Y position for the mouse.
 
@@ -837,7 +837,7 @@ def get_last_y(self):
         """
         return self._mouse_controller.position[1]
 
-    def mouse_move(self, x, y):
+    def mouse_move(self, x: int, y: int) -> None:
         """
         Move the mouse to the coordinate defined by x and y
 
@@ -849,7 +849,7 @@ def mouse_move(self, x, y):
         self._mouse_controller.position = (x, y)
         self.sleep(config.DEFAULT_SLEEP_AFTER_ACTION)
 
-    def click_at(self, x, y):
+    def click_at(self, x: int, y: int) -> None:
         """
         Click at the coordinate defined by x and y
 
@@ -862,12 +862,12 @@ def click_at(self, x, y):
     @only_if_element
     def click(
         self,
-        wait_after=config.DEFAULT_SLEEP_AFTER_ACTION,
+        wait_after: int = config.DEFAULT_SLEEP_AFTER_ACTION,
         *,
-        clicks=1,
-        interval_between_clicks=0,
-        button="left",
-    ):
+        clicks: int = 1,
+        interval_between_clicks: int = 0,
+        button: str = "left",
+    ) -> None:
         """
         Click on the last found element.
 
@@ -878,6 +878,7 @@ def click(
             button (str, optional): One of 'left', 'right', 'middle'. Defaults to 'left'
         """
         x, y = self.state.center()
+
         _mouse_click(
             self._mouse_controller, x, y, clicks, interval_between_clicks, button
         )
@@ -886,14 +887,14 @@ def click(
     @only_if_element
     def click_relative(
         self,
-        x,
-        y,
-        wait_after=config.DEFAULT_SLEEP_AFTER_ACTION,
+        x: int,
+        y: int,
+        wait_after: int = config.DEFAULT_SLEEP_AFTER_ACTION,
         *,
-        clicks=1,
-        interval_between_clicks=0,
-        button="left",
-    ):
+        clicks: int = 1,
+        interval_between_clicks: int = 0,
+        button: str = "left",
+    ) -> None:
         """
         Click Relative on the last found element.
 
@@ -907,13 +908,14 @@ def click_relative(
         """
         x = self.state.x() + x
         y = self.state.y() + y
+
         _mouse_click(
             self._mouse_controller, x, y, clicks, interval_between_clicks, button
         )
         self.sleep(wait_after)
 
     @only_if_element
-    def double_click(self, wait_after=config.DEFAULT_SLEEP_AFTER_ACTION):
+    def double_click(self, wait_after: int = config.DEFAULT_SLEEP_AFTER_ACTION) -> None:
         """
         Double Click on the last found element.
 
@@ -925,11 +927,11 @@ def double_click(self, wait_after=config.DEFAULT_SLEEP_AFTER_ACTION):
     @only_if_element
     def double_click_relative(
         self,
-        x,
-        y,
-        interval_between_clicks=0,
-        wait_after=config.DEFAULT_SLEEP_AFTER_ACTION,
-    ):
+        x: int,
+        y: int,
+        interval_between_clicks: int = 0,
+        wait_after: int = config.DEFAULT_SLEEP_AFTER_ACTION,
+    ) -> None:
         """
         Double Click Relative on the last found element.
 
@@ -949,7 +951,7 @@ def double_click_relative(
         )
 
     @only_if_element
-    def triple_click(self, wait_after=config.DEFAULT_SLEEP_AFTER_ACTION):
+    def triple_click(self, wait_after: int = config.DEFAULT_SLEEP_AFTER_ACTION) -> None:
         """
         Triple Click on the last found element.
 
@@ -961,11 +963,11 @@ def triple_click(self, wait_after=config.DEFAULT_SLEEP_AFTER_ACTION):
     @only_if_element
     def triple_click_relative(
         self,
-        x,
-        y,
-        interval_between_clicks=0,
-        wait_after=config.DEFAULT_SLEEP_AFTER_ACTION,
-    ):
+        x: int,
+        y: int,
+        interval_between_clicks: int = 0,
+        wait_after: int = config.DEFAULT_SLEEP_AFTER_ACTION,
+    ) -> None:
         """
         Triple Click Relative on the last found element.
 
@@ -985,8 +987,11 @@ def triple_click_relative(
         )
 
     def mouse_down(
-        self, wait_after=config.DEFAULT_SLEEP_AFTER_ACTION, *, button="left"
-    ):
+        self,
+        wait_after: int = config.DEFAULT_SLEEP_AFTER_ACTION,
+        *,
+        button: str = "left",
+    ) -> None:
         """
         Holds down the requested mouse button.
 
@@ -998,7 +1003,12 @@ def mouse_down(
         self._mouse_controller.press(mouse_button)
         self.sleep(wait_after)
 
-    def mouse_up(self, wait_after=config.DEFAULT_SLEEP_AFTER_ACTION, *, button="left"):
+    def mouse_up(
+        self,
+        wait_after: int = config.DEFAULT_SLEEP_AFTER_ACTION,
+        *,
+        button: str = "left",
+    ) -> None:
         """
         Releases the requested mouse button.
 
@@ -1010,7 +1020,7 @@ def mouse_up(self, wait_after=config.DEFAULT_SLEEP_AFTER_ACTION, *, button="left
         self._mouse_controller.release(mouse_button)
         self.sleep(wait_after)
 
-    def scroll_down(self, clicks):
+    def scroll_down(self, clicks: int) -> None:
         """
         Scroll Down n clicks
 
@@ -1020,7 +1030,7 @@ def scroll_down(self, clicks):
         self._mouse_controller.scroll(0, -1 * clicks)
         self.sleep(config.DEFAULT_SLEEP_AFTER_ACTION)
 
-    def scroll_up(self, clicks):
+    def scroll_up(self, clicks: int) -> None:
         """
         Scroll Up n clicks
 
@@ -1031,7 +1041,7 @@ def scroll_up(self, clicks):
         self.sleep(config.DEFAULT_SLEEP_AFTER_ACTION)
 
     @only_if_element
-    def move(self):
+    def move(self) -> None:
         """
         Move to the center position of last found item.
         """
@@ -1039,7 +1049,7 @@ def move(self):
         self._mouse_controller.position = (x, y)
         self.sleep(config.DEFAULT_SLEEP_AFTER_ACTION)
 
-    def move_relative(self, x, y):
+    def move_relative(self, x: int, y: int) -> None:
         """
         Move the mouse relative to its current position.
 
@@ -1053,7 +1063,7 @@ def move_relative(self, x, y):
         self._mouse_controller.position = (x, y)
         self.sleep(config.DEFAULT_SLEEP_AFTER_ACTION)
 
-    def move_random(self, range_x, range_y):
+    def move_random(self, range_x: int, range_y: int) -> None:
         """
         Move randomly along the given x, y range.
 
@@ -1070,11 +1080,11 @@ def move_random(self, range_x, range_y):
     @only_if_element
     def right_click(
         self,
-        wait_after=config.DEFAULT_SLEEP_AFTER_ACTION,
+        wait_after: int = config.DEFAULT_SLEEP_AFTER_ACTION,
         *,
-        clicks=1,
-        interval_between_clicks=0,
-    ):
+        clicks: int = 1,
+        interval_between_clicks: int = 0,
+    ) -> None:
         """
         Right click on the last found element.
 
@@ -1094,7 +1104,7 @@ def right_click(
         )
         self.sleep(wait_after)
 
-    def right_click_at(self, x, y):
+    def right_click_at(self, x: int, y: int) -> None:
         """
         Right click at the coordinate defined by x and y
 
@@ -1107,11 +1117,11 @@ def right_click_at(self, x, y):
     @only_if_element
     def right_click_relative(
         self,
-        x,
-        y,
-        interval_between_clicks=0,
-        wait_after=config.DEFAULT_SLEEP_AFTER_ACTION,
-    ):
+        x: int,
+        y: int,
+        interval_between_clicks: int = 0,
+        wait_after: int = config.DEFAULT_SLEEP_AFTER_ACTION,
+    ) -> None:
         """
         Right Click Relative on the last found element.
 
diff --git a/botcity/core/input_utils.py b/botcity/core/input_utils.py
index c4821ae..f95c380 100644
--- a/botcity/core/input_utils.py
+++ b/botcity/core/input_utils.py
@@ -5,22 +5,22 @@
 from pynput.mouse import Button, Controller
 
 keys_map = {
-    "num0": '0',
-    "num1": '1',
-    "num2": '2',
-    "num3": '3',
-    "num4": '4',
-    "num5": '5',
-    "num6": '6',
-    "num7": '7',
-    "num8": '8',
-    "num9": '9',
-    "add": '+',
-    "decimal": ',',
-    "subtract": '-',
-    "multiply": '*',
-    "divide": '/',
-    "separator": '|',
+    "num0": "0",
+    "num1": "1",
+    "num2": "2",
+    "num3": "3",
+    "num4": "4",
+    "num5": "5",
+    "num6": "6",
+    "num7": "7",
+    "num8": "8",
+    "num9": "9",
+    "add": "+",
+    "decimal": ",",
+    "subtract": "-",
+    "multiply": "*",
+    "divide": "/",
+    "separator": "|",
     "altleft": Key.alt_l,
     "altright": Key.alt_r,
     "capslock": Key.caps_lock,
@@ -43,14 +43,14 @@
     "volumeup": Key.media_volume_up,
     "prevtrack": Key.media_previous,
     "nexttrack": Key.media_next,
-    "return": Key.enter
+    "return": Key.enter,
 }
 
 if platform.system() != "Darwin":
     keys_map.update(
         {
             "numlock": Key.num_lock,
-            "prtsc":  Key.print_screen,
+            "prtsc": Key.print_screen,
             "prtscr": Key.print_screen,
             "printscreen": Key.print_screen,
             "prntscrn": Key.print_screen,
@@ -59,25 +59,33 @@
         }
     )
 
-mouse_map = {
-    "left": Button.left,
-    "right": Button.right,
-    "middle": Button.middle
-}
+mouse_map = {"left": Button.left, "right": Button.right, "middle": Button.middle}
 
 
-def _mouse_click(mouse_controller: Controller, x: int, y: int, clicks=1, interval_between_clicks=0, button='left'):
+def _mouse_click(
+    mouse_controller: Controller,
+    x: int,
+    y: int,
+    clicks: int = 1,
+    interval_between_clicks: int = 0,
+    button: str = "left",
+) -> None:
     """
     Moves the mouse and clicks at the coordinate defined by x and y.
     """
     if platform.system() == "Darwin":
         from . import os_compat
-        os_compat.osx_click(x=x, y=y, clicks=clicks, interval=interval_between_clicks, button=button)
+
+        os_compat.osx_click(
+            x=x, y=y, clicks=clicks, interval=interval_between_clicks, button=button
+        )
     else:
         mouse_button = mouse_map.get(button, None)
         if not mouse_button:
-            raise ValueError(f'''Invalid mouse button name.
-            The mouse button has to be one of these values: {list(mouse_map.keys())}''')
+            raise ValueError(
+                f"""Invalid mouse button name.
+            The mouse button has to be one of these values: {list(mouse_map.keys())}"""
+            )
 
         mouse_controller.position = (x, y)
         time.sleep(0.1)