[WebUI] Fix rest of CSS style nits in misc. dirs so I can turn on CSS checker.

chrome/browser/resources/sessions.css

Index: chrome/browser/resources/sessions.css
diff --git a/chrome/browser/resources/sessions.css b/chrome/browser/resources/sessions.css
index 5fc0f04dedbae9de03a5cd4cd42f961b215391f4..8b6298c418b02e5ed419fd170b95d9f934120903 100644
--- a/chrome/browser/resources/sessions.css
+++ b/chrome/browser/resources/sessions.css
@@ -1,3 +1,7 @@
+/* Copyright (c) 2012 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file. */
+
 body {
   margin: 20px;
 }
@@ -19,8 +23,8 @@ html[dir=rtl] h1 {
 }
 
 #magic-summary {
-  background-color: #ebeff9;
-  border-top: 1px solid #9cc2ef;
+  background-color: rgb(235, 239, 249);
+  border-top: 1px solid rgb(156, 194, 239);
   margin-bottom: 6px;
   margin-top: 12px;
   padding: 3px;
@@ -31,8 +35,8 @@ html[dir=rtl] h1 {
 }
 
 #sessions-summary {
-  background-color: #ebeff9;
-  border-top: 1px solid #9cc2ef;
+  background-color: rgb(235, 239, 249);
+  border-top: 1px solid rgb(156, 194, 239);
   margin-bottom: 6px;
   margin-top: 12px;
   padding: 3px;