DevTools: follow-up to view introduction, fix styles css.

third_party/WebKit/Source/devtools/front_end/elements/elementsPanel.css

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Anthony Ricaud <rik@webkit.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 153 matching lines @@
 }
 
 .styles-section:last-child {
     border-bottom: none;
 }
 
 .styles-pane .sidebar-separator {
     border-top: 0 none;
 }
 
+.style-panes-wrapper {
+    overflow: auto;
+}
+
 .styles-section.read-only {
     background-color: #eee;
 }
 
 .styles-section .style-properties li.not-parsed-ok {
     margin-left: 0;
 }
 
 .styles-filter-engaged,
 .styles-section .style-properties li.filter-match,
@@ skipping 550 matching lines @@
 
 .global-animations-toolbar {
     position: absolute;
     top: 0;
     width: 100%;
     background-color: #eee;
     border-bottom: 1px solid rgb(163, 163, 163);
     padding-left: 10px;
 }
 
+.view > .toolbar {
+    border-bottom: 1px solid #eee;
+}
+
 .events-pane .section:not(:first-of-type) {
     border-top: 1px solid rgb(231, 231, 231);
 }
 
 .events-pane .section {
     margin: 0;
 }
 
 .style-properties li.editing {
     margin-left: 10px;
@@ skipping 15 matching lines @@
     position: absolute;
     right: 0;
     bottom: 0;
     visibility: hidden;
     background-color: rgba(255, 255, 255, 0.9);
 }
 
 .styles-pane:not(.is-editing-style) .styles-section.matched-styles:not(.read-only):hover .sidebar-pane-section-toolbar {
     visibility: visible;
 }