Material Design 参考
Elevation
(海拔)
Component elevation values(组件高度值):
| Compont | Elevation | 
|---|---|
| Nav drawer | 16dp | 
| App bar | 4dp | 
| Card | 6dp | 
| FAB | 6dp | 
| Button | 2dp to 8dp | 
| Dialog | 24dp | 
(海拔)
| Compont | Elevation | 
|---|---|
| Nav drawer | 16dp | 
| App bar | 4dp | 
| Card | 6dp | 
| FAB | 6dp | 
| Button | 2dp to 8dp | 
| Dialog | 24dp |