diff --git a/style/components/tabs.less b/style/components/tabs.less
index f5f5d4f60..a4335daa2 100644
--- a/style/components/tabs.less
+++ b/style/components/tabs.less
@@ -318,16 +318,15 @@
   &-vertical&-left {
     .@{tab-prefix-cls}-tabs-bar {
       float: left;
+      border-right: 1px solid @border-color-split;
+      margin-right: -1px;
+      margin-bottom: 0;
     }
     .@{tab-prefix-cls}-tab {
       .@{tab-prefix-cls}-tab-inner {
         text-align: right;
       }
     }
-    .@{tab-prefix-cls}-tabs-bar {
-      border-right: 1px solid @border-color-split;
-      margin-right: -1px;
-    }
     .@{tab-prefix-cls}-nav-container {
       margin-right: -1px;
     }
@@ -348,6 +347,7 @@
       float: right;
       border-left: 1px solid @border-color-split;
       margin-left: -1px;
+      margin-bottom: 0;
     }
     .@{tab-prefix-cls}-nav-container {
       margin-left: -1px;