diff --git a/mucapy/main.py b/mucapy/main.py
index 6d0ceda..4b05616 100644
--- a/mucapy/main.py
+++ b/mucapy/main.py
@@ -710,15 +710,25 @@ class CollapsibleDock(QDockWidget):
                         QDockWidget.DockWidgetMovable | 
                         QDockWidget.DockWidgetFloatable)
         
-        self.toggle_button = QToolButton(self)
+        # Create a widget for the title bar that contains both toggle button and close button
+        title_widget = QWidget()
+        title_layout = QHBoxLayout(title_widget)
+        title_layout.setContentsMargins(0, 0, 0, 0)
+        title_layout.setSpacing(0)
+        
+        self.toggle_button = QToolButton()
         self.toggle_button.setIcon(QIcon.fromTheme("arrow-left"))
         self.toggle_button.setIconSize(QSize(16, 16))
         self.toggle_button.setStyleSheet("border: none;")
         self.toggle_button.clicked.connect(self.toggle_collapse)
         
-        self.setTitleBarWidget(self.toggle_button)
+        title_layout.addWidget(self.toggle_button)
+        title_layout.addStretch()
+        
+        self.setTitleBarWidget(title_widget)
         self.collapsed = False
         self.original_size = None
+        self.original_minimum_width = None
     
     def toggle_collapse(self):
         """Toggle between collapsed and expanded states"""
@@ -731,7 +741,9 @@ class CollapsibleDock(QDockWidget):
         """Collapse the dock widget"""
         if not self.collapsed:
             self.original_size = self.size()
-            self.setFixedWidth(40)
+            self.original_minimum_width = self.minimumWidth()
+            self.setMinimumWidth(0)
+            self.setMaximumWidth(0)
             self.toggle_button.setIcon(QIcon.fromTheme("arrow-right"))
             self.collapsed = True
     
@@ -1497,6 +1509,15 @@ class MainWindow(QMainWindow):
         load_model_action.triggered.connect(self.load_model_directory)
         model_menu.addAction(load_model_action)
         
+        # View menu
+        view_menu = menubar.addMenu('View')
+        self.toggle_sidebar_action = QAction('Show Sidebar', self)
+        self.toggle_sidebar_action.setCheckable(True)
+        self.toggle_sidebar_action.setChecked(True)
+        self.toggle_sidebar_action.setShortcut('Ctrl+B')
+        self.toggle_sidebar_action.triggered.connect(self.toggle_sidebar_visibility)
+        view_menu.addAction(self.toggle_sidebar_action)
+        
         # Camera menu
         self.camera_menu = menubar.addMenu('Cameras')
         
@@ -2074,6 +2095,13 @@ class MainWindow(QMainWindow):
         except Exception as e:
             QMessageBox.warning(self, "Warning", f"Could not open directory: {str(e)}")
 
+    def toggle_sidebar_visibility(self):
+        """Toggle the visibility of the sidebar"""
+        if self.toggle_sidebar_action.isChecked():
+            self.sidebar.expand()
+        else:
+            self.sidebar.collapse()
+
 if __name__ == "__main__":
     app = QApplication(sys.argv)