Yes, the login pages will be created in separate files, then added to the site pages using Framework builder.
You will need to add styling to the forms.
plugins are similar to use require once, but better.
with require once, all the code on the page being added is placed at the require once line.
using plugins, the system looks at the page and finds the code chunks in various parts of the document and places them in the correct places on the page it is being included.
this means that code on the plugin page that is outside the doctype is added to the main page outside the doctype, code that is in the head section is added in the head section. code in the body is added to the body, etc.