Specifies the positionMode of the AppBar (see example).
- The possible values are:
static(Default)—Does not position the AppBar in any special way. It is positioned according to the normal flow of the page.
sticky—Positions the AppBar based on the user's scroll position. A sticky element toggles between static and fixed CSS
positionproperty, depending on the scroll position.
fixed—Positions the AppBar relative to the viewport. It always stays in the same place even if the page is scrolled.
type AppBarPositionMode = "static" | "sticky" | "fixed";