diff --git a/wp-includes/js/tinymce/themes/advanced/skins/wp_theme/content.css b/wp-includes/js/tinymce/themes/advanced/skins/wp_theme/content.css
index 23fef64c9a..1082e82bee 100644
--- a/wp-includes/js/tinymce/themes/advanced/skins/wp_theme/content.css
+++ b/wp-includes/js/tinymce/themes/advanced/skins/wp_theme/content.css
@@ -37,13 +37,18 @@ font[face=mceinline] {font-family:inherit !important}
 .mcePageBreak {display:block;border:0;width:100%;height:12px;border-top:1px dotted #ccc;margin-top:15px;background:#fff url(../../img/pagebreak.gif) no-repeat center top;}
 
 /* WordPress styles */
+html {
+	background: url('img/white.png') repeat-y center top;
+	background-color: #f5f5f5;
+}
+
 body {
 	font-family: Georgia, "Times New Roman", "Bitstream Charter", Times, serif;
 	font-size: 13px;
 	line-height: 19px;
 	color: #333;
-	margin: 10px;
-	min-height: 100%;
+	margin: 15px auto;
+	max-width: 600px;
 }
 
 br[data-mce-bogus] {
diff --git a/wp-includes/js/tinymce/themes/advanced/skins/wp_theme/img/white.png b/wp-includes/js/tinymce/themes/advanced/skins/wp_theme/img/white.png
new file mode 100644
index 0000000000..34c762ea9d
Binary files /dev/null and b/wp-includes/js/tinymce/themes/advanced/skins/wp_theme/img/white.png differ