It`s more or less the same as running it in the browser, but I wanted to have it open for a specific app I was editing.
As for CSS/JS i just made my own stylesheet to make bubble be a little darker interface (like a code editor), and some JS for keyboard shortcuts.
Use the following guide, but use the URL to your app if you want it to be app specific, if not just use the bubble main URL. ( https://bubble.io/page?type=page&name=yourpagename&id=yourappname&tab=tabs-1 ). First time you need to log in.
Mobile app live version
@mikethedj4 I opened some webdgap app on windows and got stuck at the nw.js screen. I¨ll try to have a look at it at a later point.