How to fetch WordPress page with exact style and render on a PHP website?

I was looking for a way to render a WordPress page in a custom PHP based website. I succeeded in that but it is not styled as it is on WordPress.

Please tell me how can I fetch the page exactly as it is on WordPress?

I have this code to display the webpage:

<?php include('view/header_copy.php'); ?>

<div class="pt-20 pt-md-18 pt-lg-20 pb-13 pb-md-17 pb-lg-33 px-10 px-md-20 px-lg-20 px-xl-30">
  <div id="wp-content-container"></div>
</div>

<script>
  fetch('https://blogs.domainnamehere.com/wp-json/wp/v2/pages?slug=success-stories')
  .then(response => response.json())
  .then(data => {
    const page = data[0];
    document.getElementById('wp-content-container').innerHTML = page.content.rendered;
  })
  .catch(error => console.error('Error fetching page:', error));
</script>

<?php include('view/footer_copy.php'); ?>