Ticket #52646: 52646.diff

src/wp-content/themes/twentyfifteen/css/editor-style.css

@@ -28 +28 @@
         font-weight: 400;
         font-size: 17px;
         line-height: 1.6471;
-        margin: 20px 40px;
+        margin: auto 20px;
         max-width: 660px;
         vertical-align: baseline;
 }

src/wp-content/themes/twentysixteen/css/editor-style.css

@@ -28 +28 @@
         font-size: 16px;
         font-weight: 400;
         line-height: 1.75;
-        margin: 20px 40px;
+        margin: auto 20px;
         max-width: 600px;
         vertical-align: baseline;
 }