diff --git a/themes/day.py b/themes/day.py
index c503866..41c775c 100644
--- a/themes/day.py
+++ b/themes/day.py
@@ -54,6 +54,7 @@ QMenu::item:selected { background: #F3F4F6; }
 #SoundCard QLabel { background: transparent; }
 #SoundToggleRow { background: transparent; }
 #SoundSliderRow { background: transparent; }
+#SoundSliderRow QWidget { background: transparent; }
 #SoundToggleRow QPushButton { background-clip: padding; }
 #SoundSliderRow QSlider { background: transparent; }
 QScrollArea { background: transparent; }
diff --git a/themes/night.py b/themes/night.py
index d289fcf..61cc3ae 100644
--- a/themes/night.py
+++ b/themes/night.py
@@ -50,6 +50,7 @@ QMenu::item:selected { background: #1B2330; }
 #SoundCard QLabel { background: transparent; }
 #SoundToggleRow { background: transparent; }
 #SoundSliderRow { background: transparent; }
+#SoundSliderRow QWidget { background: transparent; }
 #SoundToggleRow QPushButton { background-clip: padding; }
 #SoundSliderRow QSlider { background: transparent; }
 QScrollArea { background: transparent; }