Index: wp-content/themes/twentyeleven/style.css
===================================================================
--- wp-content/themes/twentyeleven/style.css	(revision 18222)
+++ wp-content/themes/twentyeleven/style.css	(working copy)
@@ -993,10 +993,11 @@
 	border: 1px solid #ddd;
 	-moz-border-radius: 24px;
 	border-radius: 24px;
-	color: #777;
-	font-size: 18px;
-	font-weight: 300;
-	line-height: 48px;	
+	color: #aaa;
+	font-size: 17px;
+	font-weight: normal;
+	line-height: 48px;
+	letter-spacing: 0.1em;
 	overflow: hidden;
 	position: absolute;
 	text-align: center;