React.ReactNode
After the title: up to three action `IconButton`s per M3.
boolean
default: false
A hairline under the bar.
boolean
default: false
The on-scroll state: `surfaceContainer` instead of `surface`.
React.ReactNode
Before the title: typically a back or menu `IconButton`.
boolean
default: true
Pads the top safe-area inset. Defaults to `true`.
string
A second line under the title.
"small" | "center" | "medium" | "large"
default: "small"
`"small"` and `"center"` keep the title in the 64dp row; `"medium"` and
`"large"` move it to a second, larger line. Defaults to `"small"`.