As you may know by now, our major update (v20.1) ships with a new Multiline Toolbar option for the DevExtreme HTML/Markdown Editor. When used, the HTML/Markdown Editor arranges its toolbar items across multiple lines based upon available space width. New lines can be added/removed automatically when a user resizes their web-browser's window or changes to a mobile device orientation...
The DevExpress Team
4 June 2020