Reintroduce fix for WebKit audio/video control bug

This fix was first introduced to deal with Chrome < 13 destroying the
appearance of native `audio` and `video` button controls when
`-webkit-appearance` is set on `input[type="button"]`. See #20

Android 4.0.* seems to use a version of WebKit that contains this bug.
See: h5bp/mobile-boilerplate#121

...so the fix needs to be reintroduced.

Author: necolas

normalize.css

@@ -1,4 +1,4 @@
-/*! normalize.css 2012-03-11T12:53 UTC - http://github.com/necolas/normalize.css */
+/*! normalize.css 2012-07-07T08:58 UTC - http://github.com/necolas/normalize.css */
 
 /* =============================================================================
    HTML5 display definitions
@@ -408,19 +408,22 @@ input {
 }
 
 /*
- * 1. Improves usability and consistency of cursor style between image-type 'input' and others
+ * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
+ *    and `video` controls
  * 2. Corrects inability to style clickable 'input' types in iOS
- * 3. Removes inner spacing in IE7 without affecting normal text inputs
+ * 3. Improves usability and consistency of cursor style between image-type
+ *    'input' and others
+ * 4. Removes inner spacing in IE7 without affecting normal text inputs
  *    Known issue: inner spacing remains in IE6
  */
 
 button,
-input[type="button"],
+html input[type="button"], /* 1 */
 input[type="reset"],
 input[type="submit"] {
-    cursor: pointer; /* 1 */
     -webkit-appearance: button; /* 2 */
-    *overflow: visible;  /* 3 */
+    cursor: pointer; /* 3 */
+    *overflow: visible;  /* 4 */
 }
 
 /*