How can I individually set the CSS styles of the built-in toolbar in Univer?

[sdnkop]

In order to embed UniverSheet into my project and display it as a fullscreen table, I used:

css

  .no-layout-container {
    position: fixed;
    inset: 0;
    z-index: 9999;
    overflow: auto;
  }

However, this seems to override the built-in plugins of Univer, preventing me from viewing their names and using them. Even when I set the z-index of the entire UniverSheet to be higher than nolayout-container, the issue persists. Is there a way to customize the CSS styles of the toolbar, or to set Univer to fullscreen in a project with global default styles without using z-index? I'm a beginner in Vue, and I would greatly appreciate any help plz