#include <Servo.h>

Servo myServo;
Servo myServo1;

void setup() {
  myServo.attach(9);
  myServo1.attach(10);
}

void loop() {
  for (int pos = 0; pos <= 90; pos++) {
    myServo.write(pos);
    myServo1.write(pos + 90);
    delay(5);
  }
  
  for (int pos = 90; pos >= 0; pos--) {
    myServo.write(pos);
    myServo1.write(pos + 90);
    delay(5);
  }
}