In example, put the unprefixed declaration last.

Author: dbaron

css3-conditional/Overview.html

@@ -699,10 +699,10 @@ <h2 id=at-supports><span class=secno>6. </span>Feature queries: the
           ( -o-box-shadow: 2px 2px 2px black ) {
   .outline {
     color: white;
-    box-shadow: 2px 2px 2px black;
     -moz-box-shadow: 2px 2px 2px black;
     -webkit-box-shadow: 2px 2px 2px black;
     -o-box-shadow: 2px 2px 2px black;
+    box-shadow: 2px 2px 2px black; /* unprefixed last */
   }
 }</pre>
   </div>

css3-conditional/Overview.src.html

@@ -502,10 +502,10 @@ <h2 id="at-supports">Feature queries: the '@supports' rule</h2>
           ( -o-box-shadow: 2px 2px 2px black ) {
   .outline {
     color: white;
-    box-shadow: 2px 2px 2px black;
     -moz-box-shadow: 2px 2px 2px black;
     -webkit-box-shadow: 2px 2px 2px black;
     -o-box-shadow: 2px 2px 2px black;
+    box-shadow: 2px 2px 2px black; /* unprefixed last */
   }
 }</pre></div>