在blazor应用程序中，当我单击侧边栏中的切换按钮导航菜单时，它只会折叠侧边栏，主体保持在那个里。我想让边栏不可见，主体向左移动。所以我在mainlayout中编写了代码。layzor如下：

@inherits LayoutComponentBase
    @code {
      private bool collapseNavMenu = true;

      private string NavMenuCssClass => collapseNavMenu ? "collapse" : null;

      private void ToggleNavMenu() {
          collapseNavMenu = !collapseNavMenu;
      }
    }

<div class="page">
    <div class="sidebar">
        <div class="pos-f-t">           
            <nav class="navbar navbar-dark bg-blue top-row px-4">
                <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarToggleExternalContent" aria-controls="navbarToggleExternalContent" aria-expanded="false" aria-label="Toggle navigation" @onclick="ToggleNavMenu">
                    <span class="navbar-toggler-icon"></span>
                </button>
            </nav>

            <div class="@NavMenuCssClass">
                <ul class="nav flex-column">
                    <li class="nav-item px-3">
                        <NavLink class="nav-link" href="" Match="NavLinkMatch.All">
                            <span class="oi oi-home" aria-hidden="true"></span> Home
                        </NavLink>
                    </li>
                    <li class="nav-item px-3">
                        <NavLink class="nav-link" href="counter">
                            <span class="oi oi-plus" aria-hidden="true"></span> Counter
                        </NavLink>
                    </li>
                    <li class="nav-item px-3">
                        <NavLink class="nav-link" href="fetchdata">
                            <span class="oi oi-list-rich" aria-hidden="true"></span> Fetch data
                        </NavLink>
                    </li>
                </ul>
            </div>
        </div>
    </div>

    <div class="main">
        <div class="top-row px-4">
            <a href="https://docs.microsoft.com/aspnet/" target="_blank">About</a>
        </div>

        <div class="content px-4">
            @Body
        </div>
    </div>
    </div>

当导航条不可见时，有人能帮助使主体向左移动吗？

提前谢谢你俊