@namespace YourNamespace.Components
@inherits Microsoft.AspNetCore.Components.ComponentBase

<button @onclick="OnClick" class="@($"{Class} my-own-class")">@ChildContent</button>

@code {
    [Parameter]
    public EventCallback OnClick { get; set; }

    [Parameter]
    public string Class { get; set; }

    [Parameter]
    public RenderFragment ChildContent { get; set; }
}