The rich text widget is a single column widget that can display enter text or any HTML using a rich text editor. The widget is able to insert styles and buttons defined in the Global Styles, as well as embed images and videos from the media library.

More advanced users can use the Rich Text Widget to insert HTML code and inline CSS styles into the section using the Tools > Source code option in the widget's menu.

Using this method, you can even embed YouTube or Vimeo videos!

See the common parameter reference here.