halo-theme-dream2.0-plus/templates/common/widget.html

<aside xmlns:th="https://www.thymeleaf.org"
       th:fragment="widget (position)"
       th:class="'column column-side column-' + ${position} + ' ' + ${position == 'left'?theme.config.basic_style.left_sidebar_sticky:theme.config.basic_style.right_sidebar_sticky} + '-sticky'"
       th:classappend="${theme.config.basic_info.header_fixed}? 'fixed'">
  <th:block th:each="sidebar :${theme.config.sidebar.sidebar_show}">
    <th:block th:if="${sidebar.position == position}">
      <th:block th:replace="~{${'/widget/' + sidebar.type} :: widget ( sidebar = ${sidebar})}" />
    </th:block>
  </th:block>
</aside>