1 files changed, 3 insertions, 1 deletions

diff --git a/src/styles/tabs.scss b/src/styles/tabs.scss
index ee0858687..e500830ed 100644
--- a/src/styles/tabs.scss
+++ b/src/styles/tabs.scss
@@ -34,7 +34,9 @@
 
   &.is-active {
     background: lighten($theme-brand-primary, 35%);
-    border-left: 4px solid $theme-brand-primary;
+    border-left-width: 4px;
+    border-left-style: solid;
+    border-left-color: $theme-brand-primary;
 
     .tab-item__icon { margin-left: -4px; }
   }