DevTools: Fix buttons alignment in the audits panel

Source/devtools/front_end/auditsPanel.css

 /*
  * Copyright (C) 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 48 matching lines @@
 }
 
 .audit-launcher-view div.button-container {
     width: 100%;
     padding: 16px 0;
     -webkit-flex: none;
 }
 
 .audit-launcher-view div.button-container > button {
     -webkit-align-self: flex-start;
-    margin: 5px;
+    margin-right: 10px;
+    margin-bottom: 5px;
+    margin-top: 5px;
 }
 
 .audit-launcher-view fieldset.audit-categories-container {
     position: relative;
     top: 11px;
     left: 0;
     width: 100%;
     overflow-y: auto;
     border: 0 none;
     -webkit-flex: none;
@@ skipping 159 matching lines @@
     font-weight: bold;
 }
 
 .audit-launcher-view .progress-bar-container {
     display: inline-block;
 }
 
 .audit-launcher-view .progress-bar-container .progress-bar-stop-button {
     display: none;
 }