title: Blazor page elements other than Body
body: <p>I have a Blazor server-side app, trying to understand the structure. Inside the MainLayout.razor page, I see the tag @Body, and this is where each page's content is rendered.</p>
  <p>I am wondering, is it possible to add additional render element to the mainLayout page? For example, a @Header section. And I would prefer to define this section inside each individual page as well.</p>
  <p>In other words, for each page, besides the main content, it also needs to define Header, Footer, or whatever render element I define in the MainLayout. This way, I can have customize Header/Footer elements that are unique for each page.</p>
  <p>Thanks for any help.</p>