Index: wp-admin/customize.php
===================================================================
--- wp-admin/customize.php	(revision 28867)
+++ wp-admin/customize.php	(working copy)
@@ -108,8 +108,7 @@
 				submit_button( $save_text, 'primary save', 'save', false );
 			?>
 			<span class="spinner"></span>
-			<a class="back button" href="<?php echo esc_url( $return ? $return : admin_url( 'themes.php' ) ); ?>">
-				<?php _e( 'Cancel' ); ?>
+			<a class="back" href="<?php echo esc_url( $return ? $return : admin_url( 'themes.php' ) ); ?>"></a> 
 			</a>
 		</div>
 
Index: wp-admin/js/customize-controls.js
===================================================================
--- wp-admin/js/customize-controls.js	(revision 28867)
+++ wp-admin/js/customize-controls.js	(working copy)
@@ -1045,15 +1045,15 @@
 
 				if ( ! activated() ) {
 					save.val( api.l10n.activate ).prop( 'disabled', false );
-					back.text( api.l10n.cancel );
+					back.text( api.l10n.cancel ).css("visibility","hidden");
 
 				} else if ( saved() ) {
 					save.val( api.l10n.saved ).prop( 'disabled', true );
-					back.text( api.l10n.close );
+					back.text( api.l10n.close ).css("visibility","hidden");
 
 				} else {
 					save.val( api.l10n.save ).prop( 'disabled', false );
-					back.text( api.l10n.cancel );
+					back.text( api.l10n.cancel ).css("visibility","hidden");
 				}
 			});
 
@@ -1197,12 +1197,6 @@
 
 		api.trigger( 'ready' );
 
-		// Make sure left column gets focus
-		topFocus = $('.back');
-		topFocus.focus();
-		setTimeout(function () {
-			topFocus.focus();
-		}, 200);
 
 	});
 
Index: wp-admin/css/customize-controls.css
===================================================================
--- wp-admin/css/customize-controls.css	(revision 28867)
+++ wp-admin/css/customize-controls.css	(working copy)
@@ -209,6 +209,45 @@
 	height: 22px;
 }
 
+a.back { 
+        color: #444; 
+        display: block; 
+        position: fixed; 
+        top: 0; 
+        z-index: 99; 
+        left: -48px; 
+        width: 45px; 
+        height: 45px; 
+        padding-right: 2px; 
+        background: #eee; 
+        cursor: pointer; 
+        -webkit-transition: left ease-in-out .18s, color ease-in .1s; 
+        transition: left ease-in-out .18s, color ease-in .1s; 
+} 
+ 		 
+ 		 
+a.back:hover, 
+a.back:focus { 
+        background-color: #0074a2; 
+        color: #fff; 
+        outline: none; 
+} 
+
+a.back:before { 
+        font: normal 45px/1 dashicons; 
+        content: "\f335"; 
+        position: relative;
+	visibility: visible;
+	border-right: 1px solid #ddd;  
+} 
+
+a.back:hover::before { 
+        background-color: #0074a2; 
+        color: #fff; 
+        outline: none;
+} 
+
+
 #customize-header-actions a.back {
 	position: relative;
 	left: 0;
@@ -223,8 +262,13 @@
 .wp-full-overlay-sidebar .wp-full-overlay-header {
 	-webkit-transition: padding ease-in-out .18s;
 	transition: padding ease-in-out .18s;
+	padding: 0 15px 0 0; 
 }
 
+.wp-full-overlay-sidebar .wp-full-overlay-header a.back { 
+ 		        margin-top: 0; 
+ 		} 
+
 .in-sub-panel .wp-full-overlay-sidebar .wp-full-overlay-header {
 	padding-left: 62px;
 }