diff --git a/share/themes/Kali-Dark/gnome-shell/gnome-shell.css b/share/themes/Kali-Dark/gnome-shell/gnome-shell.css
index 37567e29..f2b6f43e 100644
--- a/share/themes/Kali-Dark/gnome-shell/gnome-shell.css
+++ b/share/themes/Kali-Dark/gnome-shell/gnome-shell.css
@@ -2978,6 +2978,12 @@ StScrollBar {
 .icon-dropshadow {
   icon-shadow: 0 1px 5px rgba(0, 0, 0, 0.3); }
 
+/* Slider */
+.slider {
+  -barlevel-border-width: 0;
+  -barlevel-height: 6px;
+  -slider-handle-radius: 0; }
+
 /* Message List */
 .message-list-controls {
   spacing: 12px;
diff --git a/share/themes/Kali-Light/gnome-shell/gnome-shell.css b/share/themes/Kali-Light/gnome-shell/gnome-shell.css
index a87aa1ad..c2e25784 100644
--- a/share/themes/Kali-Light/gnome-shell/gnome-shell.css
+++ b/share/themes/Kali-Light/gnome-shell/gnome-shell.css
@@ -2978,6 +2978,12 @@ StScrollBar {
 .icon-dropshadow {
   icon-shadow: 0 1px 5px rgba(0, 0, 0, 0.1); }
 
+/* Slider */
+.slider {
+  -barlevel-border-width: 0;
+  -barlevel-height: 6px;
+  -slider-handle-radius: 0; }
+
 /* Message List */
 .message-list-controls {
   spacing: 12px;
diff --git a/share/themes/Kali-Purple-Dark/gnome-shell/gnome-shell.css b/share/themes/Kali-Purple-Dark/gnome-shell/gnome-shell.css
index 15f43761..ca2543c0 100644
--- a/share/themes/Kali-Purple-Dark/gnome-shell/gnome-shell.css
+++ b/share/themes/Kali-Purple-Dark/gnome-shell/gnome-shell.css
@@ -2978,6 +2978,12 @@ StScrollBar {
 .icon-dropshadow {
   icon-shadow: 0 1px 5px rgba(0, 0, 0, 0.3); }
 
+/* Slider */
+.slider {
+  -barlevel-border-width: 0;
+  -barlevel-height: 6px;
+  -slider-handle-radius: 0; }
+
 /* Message List */
 .message-list-controls {
   spacing: 12px;
diff --git a/share/themes/Kali-Purple-Light/gnome-shell/gnome-shell.css b/share/themes/Kali-Purple-Light/gnome-shell/gnome-shell.css
index 78bf9f8c..a9f0363c 100644
--- a/share/themes/Kali-Purple-Light/gnome-shell/gnome-shell.css
+++ b/share/themes/Kali-Purple-Light/gnome-shell/gnome-shell.css
@@ -2978,6 +2978,12 @@ StScrollBar {
 .icon-dropshadow {
   icon-shadow: 0 1px 5px rgba(0, 0, 0, 0.1); }
 
+/* Slider */
+.slider {
+  -barlevel-border-width: 0;
+  -barlevel-height: 6px;
+  -slider-handle-radius: 0; }
+
 /* Message List */
 .message-list-controls {
   spacing: 12px;