Index: src/wp-content/themes/twentyfourteen/css/blocks.css
===================================================================
--- src/wp-content/themes/twentyfourteen/css/blocks.css	(revision 43866)
+++ src/wp-content/themes/twentyfourteen/css/blocks.css	(working copy)
@@ -127,13 +127,13 @@
 	width: 100%;
 }
 
-/* Cover Image */
+/* Cover */
 
-.wp-block-cover-image.aligncenter {
+.wp-block-cover-image.aligncenter,
+.wp-block-cover.aligncenter {
 	display: flex;
 }
 
-
 /* File */
 
 .wp-block-file .wp-block-file__button {
@@ -242,16 +242,6 @@
 	background-color: #55d737;
 }
 
-/* Columns */
-
-.wp-block-columns {
-	margin: 0 -0.5em;
-}
-
-.wp-block-column {
-	margin: 0 0.5em;
-}
-
 /* Separator */
 
 .wp-block-separator {
@@ -263,6 +253,16 @@
 	max-width: 100%;
 }
 
+/* Media & Text */
+
+.wp-block-media-text {
+	margin-bottom: 24px;
+}
+
+.wp-block-media-text *:last-child {
+	margin-bottom: 0;
+}
+
 /*--------------------------------------------------------------
 5.0 Blocks - Widgets
 --------------------------------------------------------------*/
Index: src/wp-content/themes/twentyfourteen/css/editor-blocks.css
===================================================================
--- src/wp-content/themes/twentyfourteen/css/editor-blocks.css	(revision 43866)
+++ src/wp-content/themes/twentyfourteen/css/editor-blocks.css	(working copy)
@@ -21,9 +21,14 @@
 .edit-post-visual-editor .editor-block-list__block,
 .edit-post-visual-editor .editor-block-list__block p,
 .editor-default-block-appender input[type="text"].editor-default-block-appender__content {
+	font-size: 16px;
 	line-height: 1.5;
 }
 
+.editor-default-block-appender input[type="text"].editor-default-block-appender__content {
+	font-family: Lato, sans-serif;
+}
+
 .edit-post-visual-editor .editor-block-list__block {
 	color: #2b2b2b;
 }
@@ -68,10 +73,8 @@
 
 /* Main column width */
 
-body.gutenberg-editor-page .edit-post-visual-editor .editor-post-title__block,
-body.gutenberg-editor-page .edit-post-visual-editor .editor-default-block-appender,
-body.gutenberg-editor-page .edit-post-visual-editor .editor-block-list__block {
-	max-width: 504px; /* 474 + 30 for editor block padding */
+.wp-block {
+	max-width: 504px; /* 474px + 30px to account for padding */
 }
 
 /* Link styles */
@@ -307,9 +310,10 @@
 	}
 }
 
-/* Cover Image */
+/* Cover */
 
-.wp-block-cover-image.aligncenter {
+.wp-block-cover-image.aligncenter,
+.wp-block-cover.aligncenter {
 	display: flex;
 }
 
@@ -400,6 +404,12 @@
 	line-height: normal;
 }
 
+/* Media & Text */
+
+.wp-block-media-text *:last-child {
+	margin-bottom: 0;
+}
+
 /*--------------------------------------------------------------
 6.0 Blocks - Widgets
 --------------------------------------------------------------*/