diff --git a/IPython/nbconvert/templates/slides_reveal.tpl b/IPython/nbconvert/templates/slides_reveal.tpl
index 83cb9e8..dd4d294 100644
--- a/IPython/nbconvert/templates/slides_reveal.tpl
+++ b/IPython/nbconvert/templates/slides_reveal.tpl
@@ -36,10 +36,11 @@ document.write( '<link rel="stylesheet" href="{{resources.reveal.url_prefix}}/cs
 
 <style type="text/css">
 /* Overrides of notebook CSS for static HTML export */
+html {
+overflow-y: auto;
+}
 .reveal {
 font-size: 20px;
-overflow-y: auto;
-overflow-x: hidden;
 }
 .reveal pre {
 width: 95%;