<?php
defined('ABSPATH') or exit;
// fake post to prevent notices in wp_enqueue_scripts call
$GLOBALS['post'] = new \WP_Post((object) array( 'filter' => 'raw' ));
// render simple page with form in it.
?><!DOCTYPE html>
<html>
<head>
<title>Mailchimp for WordPress Form Preview</title>
<meta charset="utf-8">
<meta name="robots" content="noindex">
<link rel="stylesheet" href="<?php bloginfo('stylesheet_url'); ?>">
<?php
wp_enqueue_scripts();
wp_print_styles();
wp_print_head_scripts();
if (function_exists('wp_custom_css_cb')) {
wp_custom_css_cb();
}
?>
<style>
body{
background: white;
width: 100%;
max-width: 100%;
text-align: left;
}
<?php // hide all other elements except the form preview ?>
body::before,
body::after,
body > *:not(#form-preview) {
display:none !important;
}
#form-preview {
display: block !important;
width: 100%;
height: 100%;
padding: 20px;
border: 0;
margin: 0;
}
</style>
</head>
<body class="page-template-default page">
<div id="form-preview" class="page type-page status-publish hentry post post-content">
<?php mc4wp_show_form($form_id); ?>
</div>
<?php do_action('wp_footer'); ?>
</body>
</html>