const int ledPin1 = 10;
const int ledPin2 = 11;
const int buttonPin = 6;

int bright = 0;
int fadeDirection = 15;  
int buttonState = LOW;  

void setup() {
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(buttonPin, INPUT);
}

void loop() {
  buttonState = digitalRead(6);

  if (buttonState == HIGH) {

    bright += fadeDirection;

    if (bright >= 255 || bright <= 0) {
      fadeDirection = -fadeDirection; 
    }
  }

  analogWrite(ledPin1, bright);
  analogWrite(ledPin2, bright);

  delay(100);
}