createCanvas(400, 400);

}

​

function draw() {

  background('white');

  stroke('blue');

  strokeWeight(10);

  fill(255,255,255,0);

  ellipse(100,100,100,100);

  stroke('yellow');

  strokeWeight(10);

  ellipse(150,150,100,100);

  stroke('black');

  ellipse(200,100,100,100);

  stroke('green');

  ellipse(230,150,100,100);

  stroke('red');

  ellipse(300, 100, 100, 100);

}