Index: wp-admin/css/common-rtl.css
===================================================================
--- wp-admin/css/common-rtl.css	(revision 28359)
+++ wp-admin/css/common-rtl.css	(working copy)
@@ -395,6 +395,14 @@
 	font-size: 13px;
 }
 
+@media screen and ( max-width: 346px ) {
+	code {
+		display: inline-block;
+		max-width: 100%;
+		overflow: scroll;
+	}
+}
+
 .subsubsub {
 	list-style: none;
 	margin: 8px 0 0;
Index: wp-admin/css/common.css
===================================================================
--- wp-admin/css/common.css	(revision 28359)
+++ wp-admin/css/common.css	(working copy)
@@ -395,6 +395,14 @@
 	font-size: 13px;
 }
 
+@media screen and ( max-width: 346px ) {
+	code {
+		display: inline-block;
+		max-width: 100%;
+		overflow: scroll;
+	}
+}
+
 .subsubsub {
 	list-style: none;
 	margin: 8px 0 0;
Index: wp-admin/css/media-rtl.css
===================================================================
--- wp-admin/css/media-rtl.css	(revision 28359)
+++ wp-admin/css/media-rtl.css	(working copy)
@@ -120,8 +120,10 @@
 	width: 100%;
 }
 
-#media-items {
-	width: 623px;
+@media screen and ( max-width: 645px ) {
+	#media-items {
+		width: 623px;
+	}
 }
 
 .media-new-php #media-items {
Index: wp-admin/css/media.css
===================================================================
--- wp-admin/css/media.css	(revision 28359)
+++ wp-admin/css/media.css	(working copy)
@@ -120,8 +120,10 @@
 	width: 100%;
 }
 
-#media-items {
-	width: 623px;
+@media screen and ( max-width: 645px ) {
+	#media-items {
+		width: 623px;
+	}
 }
 
 .media-new-php #media-items {