Problem with Select element

Hi,

How to execute command after an is selected from the element? I would like to add the font family & font color & font size to the editor, thank you~~~

The issue does not name a file, test, or entry point. Start by locating the editor's select-element handling and determine how a selected option should apply font family, font color, and font size; done means those formatting choices work in the editor and are covered by an appropriate test or reproducible check.

Written by the indexing model from the issue text.