diff --git a/header.php b/header.php
index 0aad791..286889b 100755
--- a/header.php
+++ b/header.php
@@ -7,14 +7,6 @@
         <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
         <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0">
         <link rel="dns-prefetch" href="//google-analytics.com">
-
-        <style>
-            <?php
-            /**
-             * For better peformance, core styles are inlined
-             */
-            echo file_get_contents(sprintf('%s/css/core.min.css', get_stylesheet_directory())); ?>
-        </style>
         <link rel="stylesheet" href="<?php echo get_bloginfo('stylesheet_url') . '?' . filemtime(get_stylesheet_directory() . '/style.css'); ?>">
 
         <?php wp_head(); ?>
@@ -30,19 +22,18 @@
     <body <?php body_class(); ?>>
         <header class="header" role="banner">
             <div class="container">
-                <a href="<?php bloginfo('url'); ?>" class="logo logo--header">
+                <a href="<?php bloginfo('url'); ?>" class="header__logo">
                     <?php echo is_front_page() ? '<h1>' : ''; ?>
                         <img src="<?php bloginfo('stylesheet_directory'); ?>/img/logo.svg" onerror="this.src='<?php bloginfo('stylesheet_directory'); ?>/img/logo.png'" alt="<?php bloginfo('title'); ?>" />
                     <?php echo is_front_page() ? '</h1>' : ''; ?>
                 </a>
-
                 <a href="#" class="nav-burger js-menu-toggle">
                     <span class="nav-burger__line"></span>
                     <span class="nav-burger__line"></span>
                     <span class="nav-burger__line"></span>
                 </a>
-                <nav role="navigation" class="nav nav--header">
-                    <?php wp_nav_menu(['theme_location' => 'header', 'menu_class' => 'nav__list']); ?>
+                <nav role="navigation" class="header__navigation">
+                    <?php wp_nav_menu(['theme_location' => 'header', 'menu_class' => 'nav nav--header']); ?>
                 </nav>
             </div>
         </header>
