[css3-conditional] Also use better class name in example (followup to previous commit).

Continues fixing http://lists.w3.org/Archives/Public/www-style/2013Mar/0037.html

Author: dbaron

css-conditional/Overview.html

@@ -810,15 +810,15 @@ <h2 id=at-supports><span class=secno>6. </span>Feature queries: the
     what would cause the box to become invisible were ‘<code
     class=property>box-shadow</code>’ not supported.
 
-   <pre>.outline {
+   <pre>.noticebox {
   border: 1px solid black;
   padding: 1px;
 }
 @supports ( box-shadow: 0 0 2px black inset ) or
           ( -moz-box-shadow: 0 0 2px black inset ) or
           ( -webkit-box-shadow: 0 0 2px black inset ) or
           ( -o-box-shadow: 0 0 2px black inset ) {
-  .outline {
+  .noticebox {
     -moz-box-shadow: 0 0 2px black inset;
     -webkit-box-shadow: 0 0 2px black inset;
     -o-box-shadow: 0 0 2px black inset;

css-conditional/Overview.src.html

@@ -552,15 +552,15 @@ <h2 id="at-supports">Feature queries: the '@supports' rule</h2>
 it.  When the support is present, it specifies both 'box-shadow' (with
 the prefixed versions) and 'border' in a way what would cause the box to
 become invisible were 'box-shadow' not supported.</p>
-<pre>.outline {
+<pre>.noticebox {
   border: 1px solid black;
   padding: 1px;
 }
 @supports ( box-shadow: 0 0 2px black inset ) or
           ( -moz-box-shadow: 0 0 2px black inset ) or
           ( -webkit-box-shadow: 0 0 2px black inset ) or
           ( -o-box-shadow: 0 0 2px black inset ) {
-  .outline {
+  .noticebox {
     -moz-box-shadow: 0 0 2px black inset;
     -webkit-box-shadow: 0 0 2px black inset;
     -o-box-shadow: 0 0 2px black inset;