diff --git a/gui/core/json_settings.py b/gui/core/json_settings.py
index bdd795f..8fa6826 100644
--- a/gui/core/json_settings.py
+++ b/gui/core/json_settings.py
@@ -41,6 +41,10 @@ class Settings(object):
             "custom_title_bar" : True,
             "startup_size" : [],
             "minimum_size" : [],
+            "menu_size" : {
+                "minimum" : 0,
+                "maximum" : 0
+            },
             "theme_name" : ""
         }
 
diff --git a/gui/uis/windows/main_window/setup_main_window.py b/gui/uis/windows/main_window/setup_main_window.py
index ea99d5e..1fe592b 100644
--- a/gui/uis/windows/main_window/setup_main_window.py
+++ b/gui/uis/windows/main_window/setup_main_window.py
@@ -37,7 +37,13 @@ from gui.widgets import *
 # PY WINDOW
 # ///////////////////////////////////////////////////////////////
 class SetupMainWindow:
+    # SETUP MAIN WINDOW WITH CUSTOM PARAMETERS
+    # ///////////////////////////////////////////////////////////////
     def setup(self):
+        # APP TITLE
+        # ///////////////////////////////////////////////////////////////
+        self.setWindowTitle(self.settings["app_name"])
+        
         # REMOVE TITLE BAR
         # ///////////////////////////////////////////////////////////////
         if self.settings["custom_title_bar"]:
diff --git a/gui/uis/windows/main_window/ui_main.py b/gui/uis/windows/main_window/ui_main.py
index b7351f4..7b663cd 100644
--- a/gui/uis/windows/main_window/ui_main.py
+++ b/gui/uis/windows/main_window/ui_main.py
@@ -71,12 +71,52 @@ class UI_MainWindow(object):
         # If disable custom title bar
         if not self.settings["custom_title_bar"]:
             self.window.set_stylesheet(border_radius = 0, border_size = 0)
+
+        # ADD FRAME LEFT MENU
+        # Add here the custom left menu bar
+        # ///////////////////////////////////////////////////////////////
+        self.left_menu_frame = QFrame()
+        self.left_menu_frame.setMaximumSize(50, 17280)
+        self.left_menu_frame.setMinimumSize(self.settings["menu_size"]["minimum"], 0)
+        self.left_menu_frame.setStyleSheet("background: red; border-radius: 8px;")
+
+        # ADD RIGHT WIDGETS
+        # Add here the right widgets
+        # ///////////////////////////////////////////////////////////////
+        self.right_app_frame = QFrame()
+        self.right_app_frame.setStyleSheet("border-radius: 8px;")
+
+        # ADD RIGHT APP LAYOUT
+        self.right_app_layout = QVBoxLayout(self.right_app_frame)
+        self.right_app_layout.setContentsMargins(0,0,0,0)
+        self.right_app_layout.setSpacing(6)        
+
+        # ADD TITLE BAR FRAME
+        self.title_bar_frame = QFrame()
+        self.title_bar_frame.setMaximumHeight(40)
+        self.title_bar_frame.setMaximumHeight(40)
+        self.title_bar_frame.setStyleSheet("background: #f00")
+
+        # ADD CONTENT AREA
+        self.content_area_frame = QFrame()
+        self.content_area_frame.setStyleSheet("background: #f00")
+
+        # CREDITS / BOTTOM APP FRAME
+        self.credits_frame = QFrame()
+        self.credits_frame.setMaximumHeight(26)
+        self.credits_frame.setMaximumHeight(26)
+        self.credits_frame.setStyleSheet("background: #f00")
+
+        # ADD WIDGETS TO RIGHT LAYOUT
+        self.right_app_layout.addWidget(self.title_bar_frame)
+        self.right_app_layout.addWidget(self.content_area_frame)
+        self.right_app_layout.addWidget(self.credits_frame)
         
         # ADD WIDGETS TO "PyWindow"
         # Add here your custom widgets or default widgets
         # ///////////////////////////////////////////////////////////////
-        self.window.layout.addWidget(QLabel(self.settings["app_name"]))
-        self.window.layout.addWidget(QLabel(self.settings["app_name"]))
+        self.window.layout.addWidget(self.left_menu_frame)
+        self.window.layout.addWidget(self.right_app_frame)
 
         # ADD CENTRAL WIDGET AND SET CONTENT MARGINS
         # ///////////////////////////////////////////////////////////////
diff --git a/gui/widgets/py_window/py_window.py b/gui/widgets/py_window/py_window.py
index bb2961c..72c4dda 100644
--- a/gui/widgets/py_window/py_window.py
+++ b/gui/widgets/py_window/py_window.py
@@ -41,7 +41,7 @@ class PyWindow(QFrame):
         self,
         parent,
         layout = Qt.Vertical,
-        margin = 10,
+        margin = 5,
         bg_color = "#2c313c",
         text_color = "#fff",
         text_font = "9pt 'Segoe UI'",
@@ -82,7 +82,7 @@ class PyWindow(QFrame):
         # ///////////////////////////////////////////////////////////////
         if layout == Qt.Vertical:
             # VERTICAL LAYOUT
-            self.layout = QVBoxLayout(self)
+            self.layout = QHBoxLayout(self)
         else:
             # HORIZONTAL LAYOUT
             self.layout = QHBoxLayout(self)
@@ -93,7 +93,7 @@ class PyWindow(QFrame):
         if self.settings["custom_title_bar"]:
             if enable_shadow:
                 self.shadow = QGraphicsDropShadowEffect()
-                self.shadow.setBlurRadius(25)
+                self.shadow.setBlurRadius(20)
                 self.shadow.setXOffset(0)
                 self.shadow.setYOffset(0)
                 self.shadow.setColor(QColor(0, 0, 0, 120))
diff --git a/settings.json b/settings.json
index cd258c2..1d24c18 100644
--- a/settings.json
+++ b/settings.json
@@ -1,6 +1,6 @@
 {
     "app_name": "PyOneDark - Modern GUI",
-    "custom_title_bar": false,
+    "custom_title_bar": true,
     "startup_size": [
         1200,
         720
@@ -9,5 +9,9 @@
         960,
         540
     ],
+    "menu_size" : {
+        "minimum" : 50,
+        "maximum" : 240
+    },
     "theme_name": "default"
 }
\ No newline at end of file