chromium/chrome/browser/resources/settings/performance_page/tab_discard/exception_tabbed_add_dialog.html

<style>
  cr-tabs {
    --cr-tabs-font-size: 100%;
    --cr-tabs-height: 40px;
  }

  #dialog {
    --border-top-color: var(--google-grey-300);
    --cr-dialog-body-border-top: 1px solid var(--border-top-color);
  }

  @media (prefers-color-scheme: dark) {
    #dialog {
      --border-top-color: var(--cr-separator-color);
    }
  }

  #dialog::part(wrapper) {
    overflow: hidden;
  }

  #dialog [slot=title] {
    padding-bottom: 8px;
  }

  #dialog::part(body-container) {
    height: calc(5 * var(--cr-section-min-height) + 2px);
  }

  /*
   * remove padding as we will introduce the padding on an inner element so as
   * not to cut off the checkbox ripple
   */
  #body {
    padding-inline-end: 0;
    padding-inline-start: 0;
  }

  #helpText {
    padding-bottom: 20px;
  }

  /*
   * adds horizontal padding to account for the removed padding from the dialog
   * body
   */
  #inputPage {
    padding-inline-end: 20px;
    padding-inline-start: 20px;
    padding-top: 20px;
  }
</style>
<cr-dialog id="dialog" close-text="$i18n{close}">
  <div slot="title">$i18n{addSitesTitle}</div>
  <div slot="header">
    <cr-tabs id="tabs" tab-names="[[tabNames_]]" selected="{{selectedTab_}}">
    </cr-tabs>
  </div>
  <div id="body" slot="body">
    <cr-page-selector selected="[[selectedTab_]]"
        on-iron-select="onSelectedTabChanged_">
      <tab-discard-exception-current-sites-list id="list" prefs="{{prefs}}"
          on-sites-populated="onSitesPopulated_"
          visible="[[isAddCurrentSitesTabSelected_(selectedTab_)]]"
          submit-disabled="{{submitDisabledList_}}">
      </tab-discard-exception-current-sites-list>
      <div id="inputPage">
        <div id="helpText">
          $i18nRaw{tabDiscardingExceptionsAddDialogHelp}
        </div>
        <tab-discard-exception-add-input id="input" prefs="{{prefs}}"
            submit-disabled="{{submitDisabledManual_}}">
        </tab-discard-exception-add-input>
      </div>
    </cr-page-selector>
  </div>
  <div slot="button-container">
    <cr-button id="cancelButton" class="cancel-button"
        on-click="onCancelClick_">
      $i18n{cancel}
    </cr-button>
    <cr-button id="actionButton" class="action-button" on-click="onSubmitClick_"
        disabled$="[[isSubmitDisabled_(
            submitDisabledList_, submitDisabledManual_, selectedTab_)]]"
        aria-label$="$i18n{tabDiscardingExceptionsAddButtonAriaLabel}">
      $i18n{add}
    </cr-button>
  </div>
</cr-dialog>