This field creates a drop-down list, where the user can choose one option. The number of options in the list is not limited, you can add as many as you need. This field is especially useful when you have a big list of options but don’t want to occupy too much space with it. The list will open only when the user clicks on it.
If you have installed the JetStyleManager plugin, the Block Style button will appear in the top right corner of the editing window. Here are the styling settings you can meet there: