diff --git a/core/themes/bartik/css/components/item-list.css b/core/themes/bartik/css/components/item-list.css
index 3b44185..943aef2 100644
--- a/core/themes/bartik/css/components/item-list.css
+++ b/core/themes/bartik/css/components/item-list.css
@@ -12,10 +12,12 @@
   padding: 0;
 }
 .item-list ul li {
-  margin: 0; /* LTR */
+  /* This is needed to reset styles in item-list.theme.css */
+  margin: 0;
   padding: 0.2em 0.5em 0 0; /* LTR */
 }
 [dir="rtl"] .item-list ul li {
+  /* This is needed to reset [dir="rtl"] styles in item-list.theme.css */
   margin: 0;
   padding: 0.2em 0 0 0.5em;
 }
diff --git a/core/themes/bartik/css/components/menu.css b/core/themes/bartik/css/components/menu.css
index f04237d..efde5d2 100644
--- a/core/themes/bartik/css/components/menu.css
+++ b/core/themes/bartik/css/components/menu.css
@@ -3,11 +3,13 @@
  * Styles for menus in Bartik.
  */
 
-/* Needed to override ul.menu styles in menu.theme.css */
+/* This is needed to override ul.menu styles in menu.theme.css */
 ul.menu {
-  margin: 0; /* LTR */
+  margin: 0;
   padding: 0 0 0.25em 0;
 }
+
+/* This is needed to override [dir="rtl"] ul.menu styles in menu.theme.css */
 [dir="rtl"] ul.menu {
   margin: 0;
 }