Using HTML attributes (eg class="custom-class")

[MCTaylor17]

This editor looks amazing. I'm trying to enable instructors at our school easier access style rules declared in CSS. Is there a way to include HTML attributes on custom formats that can be selected from a list?

For example

<section class="custom-class">
    <h1>Section Title</h1>
    <img alt="preview" src="./images/preview.jpg"/>
    <p>Section Content</p>
</section>