chromium/ash/webui/common/resources/cellular_setup/button_bar.html

<style include="cros-color-overrides">
  :host {
    display: flex;
    justify-content: flex-end;
    padding: 28px 0 28px 0;
  }

  #forward:focus {
    box-shadow: 0 0 0 2px var(--focus-shadow-color);
  }

  #flex {
    flex: 1;
  }

</style>
<div id="flex"></div>
<cr-button id="cancel"
    class="cancel-button"
    on-click="onCancelButtonClicked_"
    disabled="[[isButtonDisabled_(Button.CANCEL, buttonState.*)]]"
    hidden$="[[isButtonHidden_(Button.CANCEL, buttonState.*)]]">
  [[i18n('cancel')]]
</cr-button>
<cr-button id="forward"
    class="action-button"
    on-click="onForwardButtonClicked_"
    disabled="[[isButtonDisabled_(Button.FORWARD, buttonState.*)]]"
    hidden$="[[isButtonHidden_(Button.FORWARD, buttonState.*)]]">
  [[forwardButtonLabel]]
</cr-button>