horizontal scrollbar disabled:

- the Installed tab in the Wine version selection dialog
- download bookmarks (WINE AMD64, WINE WOW64, WINE I586)
- dialog for selecting the component version (DXVK/VKD3D)
- tabs of the main window: Automatic installation, Manual installation, Installed

winehelper_gui.py

@@ -1224,6 +1224,7 @@ class WineVersionSelectionDialog(QDialog):
         installed_layout = QVBoxLayout(installed_tab)
         installed_scroll_area = QScrollArea()
         installed_scroll_area.setWidgetResizable(True)
+        installed_scroll_area.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
         installed_layout.addWidget(installed_scroll_area)
         installed_content = QWidget()
         installed_scroll_area.setWidget(installed_content)
@@ -1296,6 +1297,7 @@ class WineVersionSelectionDialog(QDialog):
 
         scroll_area = QScrollArea()
         scroll_area.setWidgetResizable(True)
+        scroll_area.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
         tab_layout.addWidget(scroll_area)
 
         scroll_content = QWidget()
@@ -1724,6 +1726,7 @@ class ComponentVersionSelectionDialog(QDialog):
 
         self.scroll_area = QScrollArea()
         self.scroll_area.setWidgetResizable(True)
+        self.scroll_area.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
         main_layout.addWidget(self.scroll_area)
 
         scroll_content = QWidget()
@@ -2399,7 +2402,27 @@ class WineHelperGUI(QMainWindow):
 
         scroll_area = QScrollArea()
         scroll_area.setWidgetResizable(True)
+        scroll_area.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
         scroll_area.setContentsMargins(0, 0, 0, 0)
+        # Уменьшаем ширину вертикального скроллбара
+        scroll_area.setStyleSheet("""
+            QScrollBar:vertical {
+                width: 10px;
+                background: transparent;
+                margin: 0px;
+            }
+            QScrollBar::handle:vertical {
+                background: #555;
+                min-height: 20px;
+                border-radius: 5px;
+            }
+            QScrollBar::handle:vertical:hover {
+                background: #666;
+            }
+            QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical {
+                height: 0px;
+            }
+        """)
         layout.addWidget(scroll_area)
 
         scroll_content_widget = QWidget()