Index: wp-content/themes/pub/twentyfourteen/css/editor-style.css
===================================================================
--- wp-content/themes/pub/twentyfourteen/css/editor-style.css	(revision 15709)
+++ wp-content/themes/pub/twentyfourteen/css/editor-style.css	(working copy)
@@ -128,6 +128,8 @@
 mark,
 ins {
 	background: #fff9c0;
+	border: 0;
+	color: inherit;
 	text-decoration: none;
 }