<div appSidebarContainer class="card chat-sidebar-container">
  <div appSidebarContent class="chat-content-wrap">
    <app-chat-contents></app-chat-contents>
  </div>
  <div appSidebar="chat-sidebar" class="chat-sidebar-wrap">
    <app-chat-left-sidebar></app-chat-left-sidebar>
  </div>
</div>