cplant

@startuml
!define BLACK #363D5D
!define RED #F6363F
!define PINK #F6216E
!define MAGENTA #A54FBD
!define GREEN #37A77C
!define YELLOW #F97A00
!define BLUE #1E98F2
!define CYAN #25AFCA
!define WHITE #FEF2DC
' Base Setting
skinparam Shadowing false
skinparam BackgroundColor transparent
skinparam ComponentStyle uml2
skinparam Default {
 FontName 'Hiragino Sans'
 FontColor BLACK
 FontSize 10
 FontStyle plain
}
skinparam Sequence {
 ArrowThickness 1
 ArrowColor RED
 ActorBorderThickness 1
 LifeLineBorderColor GREEN
 ParticipantBorderThickness 0
}
skinparam Participant {
 BackgroundColor BLACK
 BorderColor BLACK
 FontColor #FFFFFF
}
skinparam Actor {
 BackgroundColor BLACK
 BorderColor BLACK
}
title <size:20>Sample Sequence</size>
actor User
participant "First Class" as A
participant "Second Class" as B
participant "Last Class" as C
User -> A: DoWork
activate A
A -> B: Create Request
activate B
B -> C: DoWork
activate C
C --> B: WorkDone
destroy C
B --> A: Request Created
deactivate B
A --> User: Done
deactivate A
@enduml