Replay changes to default.css onto default-TR.css: Removed the bottom border from links: It looked like an underline that was in the wrong location. It also interfered with user style sheets. Replaced by a normal underline. Made the underline for visited links different (dotted), because those links aren't otherwise distinguished from unvisited ones.

Original change was:
# User Bert Bos <bert@w3.org>
# Date 1408625856 -7200
#      Thu Aug 21 14:57:36 2014 +0200
# Node ID 203e3eeac0986d9fb2cd82b63f3b5c0041b751b0
# Parent  a21f79c72902f3bac347798a510425df110b48b8
Removed the bottom border from links: It looked like an underline that was in the wrong location. It also interfered with user style sheets. Replaced by a normal underline. Made the underline for visited links different (dotted), because those links aren't otherwise distinguished from unvisited ones.

Author: dbaron

default-TR.css

@@ -308,9 +308,12 @@
 /* removed to get past webmaster fondness for blue links
 
 	a:link, a:visited { We hyperlink a lot, so make it less intrusive 
-		border-bottom: 1px solid silver;
 		color: inherit;
-		text-decoration: none;
+		text-decoration: underline;
+		text-decoration-color: silver;
+	}
+	a:visited {
+		text-decoration-style: dotted;
 	}
 	a.logo:link, a.logo:visited {  backout above styling for W3C logo 
 		padding: 0;