mastodon/app/views/layouts/auth.html.haml

- content_for :content do
  .container
    .logo-container
      %h1
        = link_to root_path do
          = render partial: 'application/logo', locals: { dim: 200 }
          %small= Rails.configuration.x.local_domain

    .form-container
      = yield

= render template: "layouts/application"