Glossary: Content View Class 

Content view classes are publishing options for static and dynamic content in the site planner component. When Static or Dynamic Content is dragged to the Site Plan side, view classes will appear for the user to select. These view classes will decide the way the content appears on the front end of the web page. The options vary depending on the type of content being published. Things like position, text size, and a fixed background image effect can be applied.

Location: Site Planner

Alt text - View Class popup for static content.