Common
```kotlin
object AppBarDefaults
```
Contains default values used for [TopAppBar](/jetpack-compose/androidx.compose.material/material/components/TopAppBar) and [BottomAppBar](/jetpack-compose/androidx.compose.material/material/components/BottomAppBar).
## Properties
Common
```kotlin
val TopAppBarElevation = 4.dp
```
Default elevation used for [TopAppBar](/jetpack-compose/androidx.compose.material/material/components/TopAppBar).
Common
```kotlin
val BottomAppBarElevation = 8.dp
```
Default elevation used for [BottomAppBar](/jetpack-compose/androidx.compose.material/material/components/BottomAppBar).
Common
```kotlin
val ContentPadding =
PaddingValues(start = AppBarHorizontalPadding, end = AppBarHorizontalPadding)
```
Default padding used for [TopAppBar](/jetpack-compose/androidx.compose.material/material/components/TopAppBar) and [BottomAppBar](/jetpack-compose/androidx.compose.material/material/components/BottomAppBar).
Common
```kotlin
val topAppBarWindowInsets: WindowInsets
```
Recommended insets to be used and consumed by the top app bars
Common
```kotlin
val bottomAppBarWindowInsets: WindowInsets
```
Recommended insets to be used and consumed by the bottom app bars