y4f/Shared/NavStartseite.razor

<nav class="navbar navbar-expand-md navbar-light mb-4 me-5 ms-5 ">
    <div class="container-fluid">
        @*<a class="navbar-brand" href="">Yummy4Friends</a>*@

        <button class="navbar-toggler @NavButtonCssClass" type="button" data-bs-toggle="collapse" data-bs-target="#navbarCollapse"
                aria-controls="navbarCollapse" aria-label="Toggle navigation" @onclick="ToggleNavMenu">
            <span class="navbar-toggler-icon"></span>
        </button>
        <div class="collapse navbar-collapse justify-content-end @NavBarCssClass" id="navbarCollapse" @onclick="ToggleNavMenu">
            <ul class="navbar-nav">

                <li class="nav-item">
                    <NavLink class="nav-link" href="RegistrierungA">
                        Admin
                        <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" fill="currentColor" class="bi bi-person-fill" viewBox="0 0 16 16">
                            <path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1H3Zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6Z" />
                        </svg>
                    </NavLink>
                </li>
            </ul>
        </div>
    </div>
</nav>

@code {
    private bool collapseNavMenu = true;
    private string? NavBarCssClass => collapseNavMenu ? null : "show";
    private string? NavButtonCssClass => collapseNavMenu ? "collapsed" : null;


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