how to add a razor background image

I am trying to add a background image to my blazor project, but when I put a background image I appear on all the pages that I have, How can I do so that the image I want in background only appears in use single page and not on the plus ones?, I have a component (which I use as layout) in which I put the following, this so that in my login I do not appear the menu (I have it as LoginLayout.razor)

@inherits LayoutComponentBase<div class="col-md-10">    @Body</div>

And that LoginLayout I use on my Login.razor page