diff --git a/src/components/tab_switcher/tab_switcher.scss b/src/components/tab_switcher/tab_switcher.scss
index 479fb68625..fff6cc21a4 100644
--- a/src/components/tab_switcher/tab_switcher.scss
+++ b/src/components/tab_switcher/tab_switcher.scss
@@ -65,14 +65,8 @@
       overflow-y: auto;
       overflow-x: hidden;
       flex-direction: column;
-      &::after {
-        flex: 1 1 auto;
-      }
-      &::before {
-        flex: 0 0 auto;
-        height: 0.5em;
-      }
       &::after, &::before {
+        flex: 1 0 .5em;
         content: '';
         border-right: 1px solid;
         border-right-color: $fallback--border;