Is any part of project1.html protected from change

I'm using bootstrap and require having my own copy of the boostrap.min.css instead of pointing at stackpath. However each time I compile the code my local path is replaced with the stackpath copy of css. Is there anyway to disable it from changing the project html file, at least in part of the project file?

Did you try to add your .CSS file to your project file and add in your project HTML a reference to this .CSS file?

No I didn't, I should have thought of doing that.