Index: src/wp-content/themes/twentytwelve/editor-style.css
===================================================================
--- src/wp-content/themes/twentytwelve/editor-style.css	(revision 41594)
+++ src/wp-content/themes/twentytwelve/editor-style.css	(working copy)
@@ -14,7 +14,7 @@
 	font-family: "Open Sans", Helvetica, Arial, sans-serif;
 	font-size: 14px;
 	font-size: 1rem;
-	line-height: 1;
+	line-height: 1.714285714;
 	text-rendering: optimizeLegibility;
 	vertical-align: baseline;
 }