3rdpartylibs/fastreports.wpf/FastReport.Web.Blazor/Components/PopupNotification.razor

<div class="popup-notification @CssClass">
    <img src="_content/FastReport.Web/Resources/notification-bell.svg" />
    <span>@Message</span>
</div>

@code {
    [Parameter] public string Message { get; set; }
    [Parameter] public string CssClass { get; set; }

    public async Task ShowPopup(string message, string cssClass)
    {
        Message = message;
        CssClass = cssClass;

        StateHasChanged();

        await Task.Delay(2000);

        Message = string.Empty;
        CssClass = "hide";

        StateHasChanged();
    }
}