With default Matrix Themes styles and using the helper classes, you have many options to customize your website and widgets. Additionally, you can use inline styles for further customization, for example, in case you need to add a specific value or style. See the example below:
<div class="is-matrix bg-gray add-20" style="background:#bdcf0f1;padding:3px;border-radius:6px;">
<h3>
Service 01
</h3>
<p>
Nunc egestas, augue at pellentesque laoreet, felis eros vehicula leo, at malesuada velit leo quis pede. In ut quam vitae odio lacinia tincidunt. Quisque malesuada placerat nisl.
</p>
</div>
Please note that inline styles always override the default styles of Matrix Themes