javascript - Can vue registered components (not .vue single files) write css styles?

Question

Can this form of registration form define css? I searched the documents and APIs several times but couldn't find it.

Vue.component('my-component', {
  template: '<p>A custom component!</p>'
})

Answer 1

You can’t write it because no one can compile it for you

You can write a separate .vue file because the loader helps you compile it

Answer 2

Shouldn’t be able to write!