const int ledPin1 = 8;//pink LED
const int ledPin2 = 7;//green LED 1
const int ledPin3 = 2;//green LED 2
const int buttonPin = 3;// button pin
int buttonState = 0;//initial state of the button
int i = 0; //variable intensity led

void setup() { //declaration of inputs and outputs
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(buttonPin, INPUT);
}
void loop() {
  buttonState = digitalRead(buttonPin);// we read the state of the button
  if (buttonState == HIGH) { //if we press the button
  digitalWrite(ledPin1, HIGH);
  delay(2000);                       
  digitalWrite(ledPin2, HIGH);
  digitalWrite(ledPin3, HIGH);    
  delay(2000);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin3, LOW);
  delay(2000);                       
  digitalWrite(ledPin1, LOW);    
  delay(1000);
  
}
  else {  //if we don't press the button
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin3, LOW);
  }
}