Tailwind classes to spruce up your thank you page.

thank-you.html

<div class="inside-article text-center max-w-xl mx-auto w-5/6 py-16">
	<header class="" aria-label="Content">
		<h1 class="font-extrabold text-gray-900" itemprop="headline">Thank you</h1>
	</header>
  <div class="entry-content" itemprop="text">
    <p class="has-text-align-center"><strong>Thank you for starting your trial! We have sent you an email with your credentials.</strong><br><br>If you need any help, do not hesitate to contact us.</p>
  </div>
</div>