instrumental/app/views/about/_registration.html.haml

= simple_form_for(new_user, url: user_registration_path) do |f|
  = f.simple_fields_for :account do |account_fields|
    .input-with-append
      = account_fields.input :username,
        autofocus: true,
        placeholder: t('simple_form.labels.defaults.username'),
        required: true,
        input_html: { 'aria-label' => t('simple_form.labels.defaults.username') }
      .append
        = "@#{site_hostname}"

  = f.input :email,
    placeholder: t('simple_form.labels.defaults.email'),
    required: true,
    input_html: { 'aria-label' => t('simple_form.labels.defaults.email') }
  = f.input :password,
    autocomplete: 'off',
    placeholder: t('simple_form.labels.defaults.password'),
    required: true,
    input_html: { 'aria-label' => t('simple_form.labels.defaults.password') }
  = f.input :password_confirmation,
    autocomplete: 'off',
    placeholder: t('simple_form.labels.defaults.confirm_password'),
    required: true,
    input_html: { 'aria-label' => t('simple_form.labels.defaults.confirm_password') }

  .actions
    = f.button :button, t('auth.register'), type: :submit, class: 'button button-alternative'

  %p.hint.subtle-hint=t('auth.agreement_html', rules_path: about_more_path, terms_path: terms_path)