woocommerce/includes/admin/importers/views/html-csv-import-header.php

<?php
/**
 * Admin View: Header
 */
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}
?>
<div class="wrap woocommerce">
	<h1><?php esc_html_e( 'Import Products', 'woocommerce' ); ?></h1>

	<div class="woocommerce-progress-form-wrapper">