diff --git a/demo.html b/demo.html
index 757855a..fe998d9 100644
--- a/demo.html
+++ b/demo.html
@@ -38,6 +38,8 @@
         <h4>Heading 4</h4>
         <h5>Heading 5</h5>
         <h6>Heading 6</h6>
+
+        <p hidden>This should be hidden in all browsers, apart from IE6</p>
         
         <section>
             <h1>Section Heading 1</h1>            
diff --git a/normalize.css b/normalize.css
index 5664951..a6b48b3 100644
--- a/normalize.css
+++ b/normalize.css
@@ -1,7 +1,7 @@
-/*! normalize.css 2011-07-12T10:51 UTC · http://github.com/necolas/normalize.css */
+/*! normalize.css 2011-07-20T19:34 UTC · http://github.com/necolas/normalize.css */
 
 /* =============================================================================
-   HTML5 element display
+   HTML5 display definitions
    ========================================================================== */
 
 /*
@@ -23,10 +23,9 @@ section {
 
 /*
  * Corrects inline-block display not defined in IE6/7/8/9 & FF3
- * Known limitation: IE6 will not apply style for 'audio[controls]'
  */
 
-audio[controls],
+audio,
 canvas,
 video {
     display: inline-block;
@@ -34,6 +33,24 @@ video {
     *zoom: 1;
 }
 
+/*
+ * Prevents modern browsers from displaying 'audio' without controls
+ */
+
+audio:not([controls]) {
+    display: none;
+}
+
+/*
+ * Addresses styling not present IE6/7/8/9, FF3, S4
+ * Ensures content is hidden from all presentations, including screenreaders
+ */
+
+[hidden] {
+    display: none;
+    visibility: hidden;
+}
+
 
 /* =============================================================================
    Base