diff --git a/loop-templates/content-none.php b/loop-templates/content-none.php
index 82fd42a..360e4a8 100644
--- a/loop-templates/content-none.php
+++ b/loop-templates/content-none.php
@@ -6,9 +6,15 @@
  *
  * @package understrap
  */
+ 
+ $classes = array(
+	'content-no-results-page',
+	'not-found',
+);
+
 ?>
 
-<article id="post-<?php the_ID(); ?>" <?php post_class(); ?> class="content-no-results-page not-found">
+<article id="post-<?php the_ID(); ?>" <?php post_class($classes); ?>>
 
 	<header class="page-header">
 
diff --git a/loop-templates/content-page.php b/loop-templates/content-page.php
index 4564dac..1e8ef87 100644
--- a/loop-templates/content-page.php
+++ b/loop-templates/content-page.php
@@ -6,7 +6,7 @@
  */
 ?>
 
-<article id="post-<?php the_ID(); ?>" <?php post_class(); ?> class="content-page-item">
+<article id="post-<?php the_ID(); ?>" <?php post_class('content-page-item'); ?>>
 
 	<header class="entry-header">
 
diff --git a/loop-templates/content-search.php b/loop-templates/content-search.php
index 154e8a7..2708be4 100644
--- a/loop-templates/content-search.php
+++ b/loop-templates/content-search.php
@@ -8,7 +8,7 @@
  */
 ?>
 
-<article id="post-<?php the_ID(); ?>" <?php post_class(); ?> class="content-search-item">
+<article id="post-<?php the_ID(); ?>" <?php post_class('content-search-item'); ?>>
 
 	<header class="entry-header">
 
diff --git a/loop-templates/content-single.php b/loop-templates/content-single.php
index a38acf6..b9a975c 100644
--- a/loop-templates/content-single.php
+++ b/loop-templates/content-single.php
@@ -4,7 +4,7 @@
  */
 ?>
 
-<article id="post-<?php the_ID(); ?>" <?php post_class(); ?> class="content-single-item">
+<article id="post-<?php the_ID(); ?>" <?php post_class('content-single-item'); ?>>
 
 	<header class="entry-header">