diff --git a/wp-admin/css/wp-admin.css b/wp-admin/css/wp-admin.css
index ad7dd6b052..6a5149ffda 100644
--- a/wp-admin/css/wp-admin.css
+++ b/wp-admin/css/wp-admin.css
@@ -8884,9 +8884,6 @@ a.widget-control-edit {
 .accordion-section.open .accordion-section-content,
 .no-js .accordion-section .accordion-section-content {
 	display: block;
-	background: #fdfdfd;
-	border-left: 1px solid #dfdfdf;
-	border-right: 1px solid #dfdfdf;
 }
 
 .accordion-section.open:hover {
@@ -8897,6 +8894,9 @@ a.widget-control-edit {
 	display: none;
 	padding: 10px 20px 15px;
 	overflow: hidden;
+	background: #fdfdfd;
+	border-left: 1px solid #dfdfdf;
+	border-right: 1px solid #dfdfdf;
 }
 
 .accordion-section-title {
diff --git a/wp-admin/js/accordion.js b/wp-admin/js/accordion.js
index ac9af672db..6510f701e2 100644
--- a/wp-admin/js/accordion.js
+++ b/wp-admin/js/accordion.js
@@ -5,12 +5,16 @@ jQuery(document).ready( function($) {
 				return;
 		e.preventDefault(); // Keep this AFTER the key filter above
 
-		var section = $( this ).closest( '.accordion-section' );
+		var section = $( this ).closest( '.accordion-section' ),
+		    siblings = section.siblings( '.open' ),
+		    content = section.find( '.accordion-section-content' );
 
 		if ( section.hasClass('cannot-expand') )
 			return;
 
-		section.siblings( '.open' ).removeClass( 'open' );
+		siblings.removeClass( 'open' );
+		siblings.find( '.accordion-section-content' ).show().slideUp( 150 );
+		content.toggle( section.hasClass( 'open' ) ).slideToggle( 150 );
 		section.toggleClass( 'open' );
 	});
 });