Index: wp-content/themes/twentyeleven/editor-style.css
===================================================================
--- wp-content/themes/twentyeleven/editor-style.css	(revision 53515)
+++ wp-content/themes/twentyeleven/editor-style.css	(working copy)
@@ -18,20 +18,35 @@
 h1,
 h2 {
 	color: #000;
-	font-size: 15px;
 	font-weight: bold;
 	margin: 0 0 .8125em;
 }
 h3 {
-	font-size: 10px;
 	letter-spacing: 0.1em;
 	line-height: 2.6em;
 	text-transform: uppercase;
 }
 h4, h5, h6 {
-	font-size: 14px;
 	margin: 0;
 }
+h1{
+	font-size: 21px;
+}
+h2{
+	font-size: 18px;
+}
+h3{
+	font-size: 16px;
+}
+h4{
+	font-size: 14px;
+}
+h5{
+	font-size: 13px;
+}
+h6{
+	font-size: 12px;
+}
 hr {
 	background-color: #ccc;
 	border: 0;
Index: wp-content/themes/twentyeleven/style.css
===================================================================
--- wp-content/themes/twentyeleven/style.css	(revision 53515)
+++ wp-content/themes/twentyeleven/style.css	(working copy)
@@ -2851,3 +2851,42 @@
 #ie8 section.featured-post .attachment-small-feature {
 	max-width: none;
 }
+
+
+.entry-content h1,
+.comment-content h1 {
+	font-size: 21px;
+	font-size: 1.5rem;
+	line-height: 1.5;
+}
+.entry-content h2,
+.comment-content h2,
+.mu_register h2 {
+	font-size: 18px;
+	font-size: 1.285714286rem;
+	line-height: 1.6;
+}
+.entry-content h3,
+.comment-content h3 {
+	font-size: 16px;
+	font-size: 1.142857143rem;
+	line-height: 1.846153846;
+}
+.entry-content h4,
+.comment-content h4 {
+	font-size: 14px;
+	font-size: 1rem;
+	line-height: 1.846153846;
+}
+.entry-content h5,
+.comment-content h5 {
+	font-size: 13px;
+	font-size: 0.928571429rem;
+	line-height: 1.846153846;
+}
+.entry-content h6,
+.comment-content h6 {
+	font-size: 12px;
+	font-size: 0.857142857rem;
+	line-height: 1.846153846;
+}
\ No newline at end of file