Index: skins/common/shared.css
===================================================================
--- skins/common/shared.css	(revision 108803)
+++ skins/common/shared.css	(working copy)
@@ -56,7 +56,7 @@
 abbr,
 acronym,
 .explain {
-	border-bottom: 1px dotted black;
+	border-bottom: 1px dotted;
 	cursor: help;
 }