createCanvas(windowWidth, windowHeight);

}

​

function draw(){

  background(255);

  noFill();

  strokeJoin(ROUND);

  stroke(0);

  let size = windowHeight/2;

  strokeWeight(size * 0.05);

  let x = width / 2;

  let y = height / 2;

  rectMode(CENTER);

  rect(x, y, size, size);

}

​

function windowResized () {

  resizeCanvas(windowWidth, windowHeight);

}

​

​