title: Azure B2C with domain hint instead of IdP buttons
body: <p>I'm using Azure B2C solution that federates login to a couple of ADFSs and Azure ADs as identity providers.
  Currently they are all shown as buttons on login page. My customers do not like this because they can now see who else is using the service and who is not.</p>
  
  <p>Is it possible to use domain hint with B2C instead of claims provider buttons?
  A user types it's email address and then be redirected to "home" ADFS page based on domain in email to type a password. Is it possible?</p>