diff --git a/theme/mkdocs/css/base.css b/theme/mkdocs/css/base.css
index 0ad30b5..931a84b 100644
--- a/theme/mkdocs/css/base.css
+++ b/theme/mkdocs/css/base.css
@@ -161,14 +161,14 @@ footer.col-md-12 {
 .bs-sidebar .nav > li > a:hover,
 .bs-sidebar .nav > li > a:focus {
 	text-decoration: none;
-	border-right: 1px solid;
+	border-left: 1px solid;
 }
 .bs-sidebar .nav > .active > a,
 .bs-sidebar .nav > .active:hover > a,
 .bs-sidebar .nav > .active:focus > a {
 	font-weight: bold;
 	background-color: transparent;
-	border-right: 1px solid;
+	border-left: 1px solid;
 }
 /* Nav: second level (shown on .active) */
 .bs-sidebar .nav .nav {