<div style="background-color:#f9f9f9; padding:20px; border:1px solid #ccc;">
  <h2>Welcome to My Site</h2>
  <p>This is a custom HTML snippet.</p>
</div>

This is a test

<div style = "background-color:#f9f9f9; padding: 20px border:1px solid #cc;">
<h2>Welcome to My Site</h2>
<p>This is a custom HTML snippet.</p>
</div>