Fixed blocks are blocks inside your navigation that won't scroll even if the menu is longer than the viewport height. This is useful for logos or special elements that should always be visible.

There are two helper classes that you can use to define what is shown when the menu is expanded and when it's collapsed: `.Vlt-sidenav__elem--full` and `.Vlt-sidenav__elem--collapsed`.

You can also add top or bottom border to a block with `.Vlt-sidenav__block--border-top` or `.Vlt-sidenav__block--border-bottom`