chromium/chrome/browser/resources/ash/settings/os_people_page/setup_pin_dialog.html

<style include="settings-shared">
  #pinKeyboardDiv {
    justify-content: center;
  };

  #pinKeyboard {
    --cr-input-placeholder-letter-spacing: normal;
  }
</style>
<cr-dialog id="dialog" on-close="close"
    close-text="$i18n{close}">
  <div slot="title">[[getTitleMessage_(isConfirmStep_)]]</div>
  <div slot="body">
    <!-- PIN keyboard -->
    <div id="pinKeyboardDiv" class="settings-box continuation">
      <setup-pin-keyboard id="pinKeyboard"
          enable-submit="{{enableSubmit_}}"
          is-confirm-step="{{isConfirmStep_}}"
          on-pin-submit="onPinSubmit_"
          on-set-pin-done="onSetPinDone_"
          auth-token="[[authToken]]"
          quick-unlock-private="[[quickUnlockPrivate]]"
          enable-placeholder>
      </setup-pin-keyboard>
    </div>
  </div>
  <div slot="button-container">
    <cr-button class="cancel-button" on-click="onCancelClick_">
      $i18n{cancel}
    </cr-button>
    <cr-button class="action-button" on-click="onPinSubmit_"
        disabled$="[[!enableSubmit_]]">
      <span>[[getContinueMessage_(isConfirmStep_)]]</span>
    </cr-button>
  </div>
</cr-dialog>