Index: src/wp-includes/css/editor.css
===================================================================
--- src/wp-includes/css/editor.css	(revision 33173)
+++ src/wp-includes/css/editor.css	(working copy)
@@ -121,7 +121,7 @@
 }
 
 .mce-window .wp-editor-help {
-	width: 340px;
+	width: 360px;
 	padding: 10px 15px 0;
 }
 
@@ -131,8 +131,10 @@
 }
 
 .mce-window .wp-editor-help table {
-	width: 320px;
+	width: 340px;
 	margin-bottom: 20px;
+	table-layout: fixed;
+	border-collapse: collapse;
 }
 
 .mce-window .wp-editor-help td,
@@ -153,7 +155,8 @@
 }
 
 .mce-window .wp-editor-help .wp-help-th-center th {
-	text-align: center;
+	text-align: left;
+	padding-left: 15px;
 }
 
 .mce-window .wp-editor-help kbd {
@@ -167,9 +170,13 @@
 
 .mce-window .wp-help-header td {
 	font-weight: bold;
-	padding: 0 5px;
+	padding: 0;
 }
 
+.mce-window .wp-help-header td:nth-child(odd) {
+	width: 75px;
+}
+
 /* TinyMCE menus */
 .mce-menu,
 .mce-floatpanel.mce-popover {