diff --git a/src/wp-admin/css/common.css b/src/wp-admin/css/common.css
index 9d9d2cf40d..6afce72263 100644
--- a/src/wp-admin/css/common.css
+++ b/src/wp-admin/css/common.css
@@ -1314,6 +1314,7 @@ div.error p,
 }
 
 .notice-alt {
+	-webkit-box-shadow: none;
 	box-shadow: none;
 }
 
diff --git a/src/wp-admin/css/edit.css b/src/wp-admin/css/edit.css
index a67077a2ac..003f9274d6 100644
--- a/src/wp-admin/css/edit.css
+++ b/src/wp-admin/css/edit.css
@@ -291,8 +291,10 @@ ul.wp-tab-bar li {
 	max-width: 100%;
 	height: auto;
 	width: auto;
+	background-image: -webkit-linear-gradient(45deg, #c4c4c4 25%, transparent 25%, transparent 75%, #c4c4c4 75%, #c4c4c4), -webkit-linear-gradient(45deg, #c4c4c4 25%, transparent 25%, transparent 75%, #c4c4c4 75%, #c4c4c4);
 	background-image: linear-gradient(45deg, #c4c4c4 25%, transparent 25%, transparent 75%, #c4c4c4 75%, #c4c4c4), linear-gradient(45deg, #c4c4c4 25%, transparent 25%, transparent 75%, #c4c4c4 75%, #c4c4c4);
 	background-position: 0 0, 10px 10px;
+	-webkit-background-size: 20px 20px;
 	background-size: 20px 20px;
 }