Widget _customContentAndBtn(BuildContext context) {
    return TDButton(
        text: '自定义边距和按钮',
        size: TDButtonSize.large,
        type: TDButtonType.outline,
        theme: TDButtonTheme.primary,
        onTap: () {
          showGeneralDialog(
            context: context,
            pageBuilder: (BuildContext buildContext, Animation<double> animation,
                Animation<double> secondaryAnimation) {
              return TDConfirmDialog(
                title: _dialogTitle,
                content: _commonContent,
                padding: const EdgeInsets.fromLTRB(8, 8, 8, 0),
                buttonWidget: Container(
                  padding: const EdgeInsets.fromLTRB(0, 16, 0, 16),
                  child: TDButton(
                    text: '自定义按钮',
                    theme: TDButtonTheme.primary,
                    onTap: () {
                      Navigator.of(context).pop();
                    },
                  ),
                ),
              );
            }
          );
        }
    );
  }