diff --git a/gnome-shell/_common.scss b/gnome-shell/_common.scss
index 0b5005b..a2a1df4 100644
--- a/gnome-shell/_common.scss
+++ b/gnome-shell/_common.scss
@@ -719,13 +719,17 @@ StScrollBar {
     spacing: 8px;
   }
 
-  .ws-switcher-active-up, .ws-switcher-active-down {
+  .ws-switcher-active-up,
+  .ws-switcher-active-down,
+  .ws-switcher-active-left,
+  .ws-switcher-active-right {
     height: 50px;
     background-color: $selected_bg_color;
     color: $selected_fg_color;
     //background-image: url("resource:///org/gnome/shell/theme/assets/ws-switch-arrow-up.png");
     background-size: 32px;
     border-radius: 8px;
+    border-color: $selected_bg_color;
   }
   .ws-switcher-active-up {
     background-image: url("assets/ws-switch-arrow-up.png"); }
diff --git a/gnome-shell/gnome-shell.css b/gnome-shell/gnome-shell.css
index f4568d4..740d27c 100644
--- a/gnome-shell/gnome-shell.css
+++ b/gnome-shell/gnome-shell.css
@@ -658,12 +658,16 @@ StScrollBar {
   padding: 0px;
   spacing: 8px; }
 
-.ws-switcher-active-up, .ws-switcher-active-down {
+.ws-switcher-active-up,
+.ws-switcher-active-down,
+.ws-switcher-active-left,
+.ws-switcher-active-right {
   height: 50px;
   background-color: #8fbcbb;
   color: #fefefe;
   background-size: 32px;
-  border-radius: 8px; }
+  border-radius: 8px;
+  border-color: #8fbcbb; }
 
 .ws-switcher-active-up {
   background-image: url("assets/ws-switch-arrow-up.png"); }