Index: src/bp-messages/bp-messages-template.php
===================================================================
--- src/bp-messages/bp-messages-template.php	(revision 11386)
+++ src/bp-messages/bp-messages-template.php	(working copy)
@@ -1263,7 +1263,7 @@
 				<p>
 					<strong><?php echo stripslashes( wp_filter_kses( $notice->subject ) ) ?></strong><br />
 					<?php echo stripslashes( wp_filter_kses( $notice->message) ) ?>
-					<a href="#" id="close-notice"><?php _e( 'Close', 'buddypress' ) ?></a>
+					<button type="button" href="#" id="close-notice"><?php _e( 'Close', 'buddypress' ) ?></button>
 				</p>
 			</div>
 			<?php
Index: src/bp-templates/bp-legacy/css/buddypress-rtl.css
===================================================================
--- src/bp-templates/bp-legacy/css/buddypress-rtl.css	(revision 11386)
+++ src/bp-templates/bp-legacy/css/buddypress-rtl.css	(working copy)
@@ -1222,6 +1222,11 @@
 	border: 1px solid #cb2;
 	color: #440;
 }
+#close-notice{
+	font-size: 0.9em;
+	padding: 3px 5px;
+	margin-right: 20px;
+}
 #buddypress #item-header:after {
 	clear: both;
 	content: "";
Index: src/bp-templates/bp-legacy/css/buddypress.css
===================================================================
--- src/bp-templates/bp-legacy/css/buddypress.css	(revision 11386)
+++ src/bp-templates/bp-legacy/css/buddypress.css	(working copy)
@@ -1222,6 +1222,11 @@
 	border: 1px solid #cb2;
 	color: #440;
 }
+#close-notice{
+	font-size: 0.9em;
+	padding: 3px 5px;
+	margin-left: 20px;
+}
 #buddypress #item-header:after {
 	clear: both;
 	content: "";