diff --git a/core/modules/system/css/system.diff.css b/core/modules/system/css/system.diff.css
index 5588699..ca27b83 100644
--- a/core/modules/system/css/system.diff.css
+++ b/core/modules/system/css/system.diff.css
@@ -86,7 +86,7 @@ table.diff th {
 }
 [dir="rtl"] table.diff th {
   padding-left: inherit;
-  padding-right: 9px;
+  padding-right: 12px;
 }
 table.diff td div {
   overflow: auto;
diff --git a/core/modules/system/css/system.theme.css b/core/modules/system/css/system.theme.css
index dc24f9c..2e38105 100644
--- a/core/modules/system/css/system.theme.css
+++ b/core/modules/system/css/system.theme.css
@@ -80,7 +80,7 @@ label.option {
 [dir="rtl"] .form-type-radio .description,
 [dir="rtl"] .form-type-checkbox .description {
   margin-left: 0;
-  margin-right: 2.4em; 
+  margin-right: 2.4em;
 }
 .marker {
   color: #e00;
@@ -333,8 +333,8 @@ th.checkbox {
   padding: 0 1px;
   height: 16px;
   border-radius: 10em;
-  -webkit-animation: animate-stripes 3s linear infinite;
-  -moz-animation: animate-stripes 3s linear infinite;
+  -webkit-animation: animate-stripes 3s linear infinite; /* LTR */
+  -moz-animation: animate-stripes 3s linear infinite; /* LTR */
   -webkit-transition: width 0.5s ease-out;
   transition: width 0.5s ease-out;
 }