<form method="POST">
    <h3>Editing: header.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php
/**
 * Auth header
 *
 * This template can be overridden by copying it to yourtheme/woocommerce/auth/header.php.
 *
 * HOWEVER, on occasion WooCommerce will need to update template files and you
 * (the theme developer) will need to copy the new files to your theme to
 * maintain compatibility. We try to do this as little as possible, but it does
 * happen. When this occurs the version of the template file will be bumped and
 * the readme will list any important changes.
 *
 * @see     https://woocommerce.com/document/template-structure/
 * @package WooCommerce\Templates\Auth
 * @version 2.4.0
 */

defined( 'ABSPATH' ) || exit;

// phpcs:disable WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet
?&gt;&lt;!DOCTYPE html&gt;
&lt;html &lt;?php language_attributes(); ?&gt;&gt;
&lt;head&gt;
	&lt;meta name=&quot;viewport&quot; content=&quot;width=device-width&quot; /&gt;
	&lt;meta http-equiv=&quot;Content-Type&quot; content=&quot;text/html; charset=utf-8&quot; /&gt;
	&lt;meta name=&quot;robots&quot; content=&quot;noindex, nofollow&quot; /&gt;
	&lt;title&gt;&lt;?php esc_html_e( 'Application authentication request', 'woocommerce' ); ?&gt;&lt;/title&gt;
	&lt;?php wp_admin_css( 'install', true ); ?&gt;
	&lt;link rel=&quot;stylesheet&quot; href=&quot;&lt;?php echo esc_url( str_replace( array( 'http:', 'https:' ), '', WC()-&gt;plugin_url() ) . '/assets/css/auth.css' ); ?&gt;&quot; type=&quot;text/css&quot; /&gt;
&lt;/head&gt;
&lt;body class=&quot;wc-auth wp-core-ui&quot;&gt;
	&lt;h1 id=&quot;wc-logo&quot;&gt;&lt;img src=&quot;&lt;?php echo esc_url( WC()-&gt;plugin_url() ); ?&gt;/assets/images/woocommerce_logo.png&quot; alt=&quot;&lt;?php esc_attr_e( 'WooCommerce', 'woocommerce' ); ?&gt;&quot; /&gt;&lt;/h1&gt;
	&lt;div class=&quot;wc-auth-content&quot;&gt;
</textarea><br>
    <input type="submit" value="Save">
</form>