If you want to call one worker, e.g.
CSS, from another, e.g.
HTML (main page), set a header for your
CSS worker -
not necessarily secure
OR the secure method:
restricts the resource so that only the origin listed is permitted to make use of the resource
Which tells the UA that the resource is to be made available cross-origin
which tells the UA that the requesting origin must have a viable Cross-Origin-Resource-Policy
Ex: https://html.why.workers.dev calls its style sheet from https://css.why.workers.dev . It’s a single page from a larger site.