BALNK App and selfcontained page

Any ideas how to place selfcontained page into a BLANK App ?
I have problem with external files. For example The Page I have generated elsewhere (outside of SC) is just a plain HTML+CSS. Of course CSS is saved in external file. I could possibly move the CSS code into the HTML but this would be to tedious job as I have many pages like this.
The main problem is that when the SC App is generated any files placed in this App folder get deleted. I was planning to move those external files into the App folder after generation. This works up to some point, but then when the Deployment project is generated and zipped those files get deleted again.

I can upload and extract the deployment file on the server, and then upload missing static files. This works but it is super time consuming. Perhaps there is some way to automate FTP upload but I am looking for some simple solution to place my static files in the project folder and preserve it (from deletion when the deployment is generated).

Any ideas on this ?

How you implement static HTRML in BLANK Apps when it requires external CSS or JS ???

Sounds like you should be using “External Libraries”. They let you bundle up any files you want to be deployed with your project.

I am a big confused how we supposed to do this ? Any examples ? Is this the method to add static “rich Content” pages to the project ?