diff --git a/src/ui/MainWinddow.ui b/src/ui/MainWinddow.ui
index e2fcc72..9ae505f 100644
--- a/src/ui/MainWinddow.ui
+++ b/src/ui/MainWinddow.ui
@@ -32,6 +32,12 @@
       <property name="orientation">
        <enum>Qt::Orientation::Horizontal</enum>
       </property>
+      <property name="opaqueResize">
+       <bool>false</bool>
+      </property>
+      <property name="childrenCollapsible">
+       <bool>false</bool>
+      </property>
       <widget class="QFrame" name="frame">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
@@ -168,6 +174,12 @@
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
+       <property name="frameShadow">
+        <enum>QFrame::Shadow::Raised</enum>
+       </property>
+       <property name="midLineWidth">
+        <number>1</number>
+       </property>
        <property name="widgetResizable">
         <bool>true</bool>
        </property>
@@ -213,7 +225,7 @@
       </widget>
       <widget class="QFrame" name="frame_3">
        <property name="frameShape">
-        <enum>QFrame::Shape::NoFrame</enum>
+        <enum>QFrame::Shape::StyledPanel</enum>
        </property>
        <property name="frameShadow">
         <enum>QFrame::Shadow::Raised</enum>
@@ -234,7 +246,7 @@
         <item>
          <widget class="QFrame" name="frame_4">
           <property name="frameShape">
-           <enum>QFrame::Shape::StyledPanel</enum>
+           <enum>QFrame::Shape::NoFrame</enum>
           </property>
           <property name="frameShadow">
            <enum>QFrame::Shadow::Raised</enum>
@@ -369,6 +381,12 @@
         </item>
         <item>
          <widget class="QScrollArea" name="scrollArea_2">
+          <property name="frameShape">
+           <enum>QFrame::Shape::NoFrame</enum>
+          </property>
+          <property name="frameShadow">
+           <enum>QFrame::Shadow::Raised</enum>
+          </property>
           <property name="widgetResizable">
            <bool>true</bool>
           </property>
@@ -378,7 +396,7 @@
              <x>0</x>
              <y>0</y>
              <width>726</width>
-             <height>695</height>
+             <height>697</height>
             </rect>
            </property>
            <layout class="QVBoxLayout" name="verticalLayout_3">
@@ -394,20 +412,6 @@
             <property name="bottomMargin">
              <number>0</number>
             </property>
-            <item>
-             <widget class="QLabel" name="label_3">
-              <property name="text">
-               <string>TextLabel</string>
-              </property>
-             </widget>
-            </item>
-            <item>
-             <widget class="QLabel" name="label_4">
-              <property name="text">
-               <string>TextLabel</string>
-              </property>
-             </widget>
-            </item>
            </layout>
           </widget>
          </widget>
@@ -432,7 +436,6 @@
      <string>Projekt</string>
     </property>
     <addaction name="actionNeu"/>
-    <addaction name="action_ffnen"/>
     <addaction name="separator"/>
     <addaction name="actionVorhandene_Projekte"/>
     <addaction name="separator"/>
@@ -460,17 +463,6 @@
     <string>Ctrl+N</string>
    </property>
   </action>
-  <action name="action_ffnen">
-   <property name="icon">
-    <iconset theme="folder-open"/>
-   </property>
-   <property name="text">
-    <string>Öffnen ...</string>
-   </property>
-   <property name="shortcut">
-    <string>Ctrl+O</string>
-   </property>
-  </action>
   <action name="actionBeenden">
    <property name="icon">
     <iconset theme="QIcon::ThemeIcon::ApplicationExit"/>
diff --git a/src/ui/MainWinddow_ui.py b/src/ui/MainWinddow_ui.py
index bbb127f..b149c1c 100644
--- a/src/ui/MainWinddow_ui.py
+++ b/src/ui/MainWinddow_ui.py
@@ -31,18 +31,14 @@ class Ui_MainWindow(object):
         self.actionNeu.setObjectName(u"actionNeu")
         icon = QIcon(QIcon.fromTheme(u"folder-new"))
         self.actionNeu.setIcon(icon)
-        self.action_ffnen = QAction(MainWindow)
-        self.action_ffnen.setObjectName(u"action_ffnen")
-        icon1 = QIcon(QIcon.fromTheme(u"folder-open"))
-        self.action_ffnen.setIcon(icon1)
         self.actionBeenden = QAction(MainWindow)
         self.actionBeenden.setObjectName(u"actionBeenden")
-        icon2 = QIcon(QIcon.fromTheme(QIcon.ThemeIcon.ApplicationExit))
-        self.actionBeenden.setIcon(icon2)
+        icon1 = QIcon(QIcon.fromTheme(QIcon.ThemeIcon.ApplicationExit))
+        self.actionBeenden.setIcon(icon1)
         self.actionEinstellungen = QAction(MainWindow)
         self.actionEinstellungen.setObjectName(u"actionEinstellungen")
-        icon3 = QIcon(QIcon.fromTheme(QIcon.ThemeIcon.DocumentProperties))
-        self.actionEinstellungen.setIcon(icon3)
+        icon2 = QIcon(QIcon.fromTheme(QIcon.ThemeIcon.DocumentProperties))
+        self.actionEinstellungen.setIcon(icon2)
         self.actionVorhandene_Projekte = QAction(MainWindow)
         self.actionVorhandene_Projekte.setObjectName(u"actionVorhandene_Projekte")
         self.actionVorhandene_Projekte.setEnabled(False)
@@ -54,6 +50,8 @@ class Ui_MainWindow(object):
         self.splitter = QSplitter(self.centralwidget)
         self.splitter.setObjectName(u"splitter")
         self.splitter.setOrientation(Qt.Orientation.Horizontal)
+        self.splitter.setOpaqueResize(False)
+        self.splitter.setChildrenCollapsible(False)
         self.frame = QFrame(self.splitter)
         self.frame.setObjectName(u"frame")
         sizePolicy = QSizePolicy(QSizePolicy.Policy.Preferred, QSizePolicy.Policy.Preferred)
@@ -94,16 +92,16 @@ class Ui_MainWindow(object):
         self.pushButton = QPushButton(self.frame_2)
         self.pushButton.setObjectName(u"pushButton")
         self.pushButton.setLayoutDirection(Qt.LayoutDirection.LeftToRight)
-        icon4 = QIcon(QIcon.fromTheme(QIcon.ThemeIcon.MediaPlaybackStart))
-        self.pushButton.setIcon(icon4)
+        icon3 = QIcon(QIcon.fromTheme(QIcon.ThemeIcon.MediaPlaybackStart))
+        self.pushButton.setIcon(icon3)
 
         self.horizontalLayout_2.addWidget(self.pushButton)
 
         self.pushButton_2 = QPushButton(self.frame_2)
         self.pushButton_2.setObjectName(u"pushButton_2")
         self.pushButton_2.setAutoFillBackground(False)
-        icon5 = QIcon(QIcon.fromTheme(QIcon.ThemeIcon.MediaSeekForward))
-        self.pushButton_2.setIcon(icon5)
+        icon4 = QIcon(QIcon.fromTheme(QIcon.ThemeIcon.MediaSeekForward))
+        self.pushButton_2.setIcon(icon4)
 
         self.horizontalLayout_2.addWidget(self.pushButton_2)
 
@@ -113,8 +111,8 @@ class Ui_MainWindow(object):
 
         self.pB_lade_aus_fn2 = QPushButton(self.frame_2)
         self.pB_lade_aus_fn2.setObjectName(u"pB_lade_aus_fn2")
-        icon6 = QIcon(QIcon.fromTheme(QIcon.ThemeIcon.GoDown))
-        self.pB_lade_aus_fn2.setIcon(icon6)
+        icon5 = QIcon(QIcon.fromTheme(QIcon.ThemeIcon.GoDown))
+        self.pB_lade_aus_fn2.setIcon(icon5)
 
         self.horizontalLayout_2.addWidget(self.pB_lade_aus_fn2)
 
@@ -129,6 +127,8 @@ class Ui_MainWindow(object):
         sizePolicy2.setVerticalStretch(0)
         sizePolicy2.setHeightForWidth(self.scrollArea.sizePolicy().hasHeightForWidth())
         self.scrollArea.setSizePolicy(sizePolicy2)
+        self.scrollArea.setFrameShadow(QFrame.Shadow.Raised)
+        self.scrollArea.setMidLineWidth(1)
         self.scrollArea.setWidgetResizable(True)
         self.scrollAreaWidgetContents = QWidget()
         self.scrollAreaWidgetContents.setObjectName(u"scrollAreaWidgetContents")
@@ -153,14 +153,14 @@ class Ui_MainWindow(object):
         self.splitter.addWidget(self.scrollArea)
         self.frame_3 = QFrame(self.splitter)
         self.frame_3.setObjectName(u"frame_3")
-        self.frame_3.setFrameShape(QFrame.Shape.NoFrame)
+        self.frame_3.setFrameShape(QFrame.Shape.StyledPanel)
         self.frame_3.setFrameShadow(QFrame.Shadow.Raised)
         self.verticalLayout_4 = QVBoxLayout(self.frame_3)
         self.verticalLayout_4.setObjectName(u"verticalLayout_4")
         self.verticalLayout_4.setContentsMargins(0, 0, 0, 0)
         self.frame_4 = QFrame(self.frame_3)
         self.frame_4.setObjectName(u"frame_4")
-        self.frame_4.setFrameShape(QFrame.Shape.StyledPanel)
+        self.frame_4.setFrameShape(QFrame.Shape.NoFrame)
         self.frame_4.setFrameShadow(QFrame.Shadow.Raised)
         self.horizontalLayout_3 = QHBoxLayout(self.frame_4)
         self.horizontalLayout_3.setObjectName(u"horizontalLayout_3")
@@ -224,23 +224,15 @@ class Ui_MainWindow(object):
 
         self.scrollArea_2 = QScrollArea(self.frame_3)
         self.scrollArea_2.setObjectName(u"scrollArea_2")
+        self.scrollArea_2.setFrameShape(QFrame.Shape.NoFrame)
+        self.scrollArea_2.setFrameShadow(QFrame.Shadow.Raised)
         self.scrollArea_2.setWidgetResizable(True)
         self.scrollAreaWidgetContents_2 = QWidget()
         self.scrollAreaWidgetContents_2.setObjectName(u"scrollAreaWidgetContents_2")
-        self.scrollAreaWidgetContents_2.setGeometry(QRect(0, 0, 726, 695))
+        self.scrollAreaWidgetContents_2.setGeometry(QRect(0, 0, 726, 697))
         self.verticalLayout_3 = QVBoxLayout(self.scrollAreaWidgetContents_2)
         self.verticalLayout_3.setObjectName(u"verticalLayout_3")
         self.verticalLayout_3.setContentsMargins(0, 0, 0, 0)
-        self.label_3 = QLabel(self.scrollAreaWidgetContents_2)
-        self.label_3.setObjectName(u"label_3")
-
-        self.verticalLayout_3.addWidget(self.label_3)
-
-        self.label_4 = QLabel(self.scrollAreaWidgetContents_2)
-        self.label_4.setObjectName(u"label_4")
-
-        self.verticalLayout_3.addWidget(self.label_4)
-
         self.scrollArea_2.setWidget(self.scrollAreaWidgetContents_2)
 
         self.verticalLayout_4.addWidget(self.scrollArea_2)
@@ -265,7 +257,6 @@ class Ui_MainWindow(object):
         self.menubar.addAction(self.menuProjekt.menuAction())
         self.menubar.addAction(self.menuThema.menuAction())
         self.menuProjekt.addAction(self.actionNeu)
-        self.menuProjekt.addAction(self.action_ffnen)
         self.menuProjekt.addSeparator()
         self.menuProjekt.addAction(self.actionVorhandene_Projekte)
         self.menuProjekt.addSeparator()
@@ -284,10 +275,6 @@ class Ui_MainWindow(object):
         self.actionNeu.setText(QCoreApplication.translate("MainWindow", u"Neu ...", None))
 #if QT_CONFIG(shortcut)
         self.actionNeu.setShortcut(QCoreApplication.translate("MainWindow", u"Ctrl+N", None))
-#endif // QT_CONFIG(shortcut)
-        self.action_ffnen.setText(QCoreApplication.translate("MainWindow", u"\u00d6ffnen ...", None))
-#if QT_CONFIG(shortcut)
-        self.action_ffnen.setShortcut(QCoreApplication.translate("MainWindow", u"Ctrl+O", None))
 #endif // QT_CONFIG(shortcut)
         self.actionBeenden.setText(QCoreApplication.translate("MainWindow", u"Beenden", None))
         self.actionEinstellungen.setText(QCoreApplication.translate("MainWindow", u"Einstellungen ...", None))
@@ -304,8 +291,6 @@ class Ui_MainWindow(object):
         self.label_7.setText(QCoreApplication.translate("MainWindow", u"Nachher (Neu)", None))
         self.label_5.setText(QCoreApplication.translate("MainWindow", u"Zoom", None))
         self.accept_changes.setText(QCoreApplication.translate("MainWindow", u"\u2705 \u00c4nderungen \u00fcbernehmen", None))
-        self.label_3.setText(QCoreApplication.translate("MainWindow", u"TextLabel", None))
-        self.label_4.setText(QCoreApplication.translate("MainWindow", u"TextLabel", None))
         self.menuProjekt.setTitle(QCoreApplication.translate("MainWindow", u"Projekt", None))
         self.menuThema.setTitle(QCoreApplication.translate("MainWindow", u"Thema", None))
     # retranslateUi
diff --git a/src/ui/MainWindow.py b/src/ui/MainWindow.py
index 2f80d9e..0a14c69 100644
--- a/src/ui/MainWindow.py
+++ b/src/ui/MainWindow.py
@@ -629,11 +629,11 @@ class MainWindow(QMainWindow):
                 background-color: palette(highlight);
                 color: palette(highlighted-text);
             }
-            
+            /*
             QTreeWidget::item:hover {
                 background-color: palette(alternate-base);
             }
-            
+            */
             QTreeWidget::branch {
                 /*margin: 2px 0px;*/
             }