int button = 3;
int led = 2;



void setup() {
  // put your setup code here, to run once:
  pinMode(button, INPUT);
  pinMode(led, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  if(digitalRead(button) == HIGH){
    digitalWrite(led, LOW);
    delay(250);
    digitalWrite(led, HIGH);
    delay(1000);
  }
  else{digitalWrite(led, HIGH);
  }

}