createCanvas(400, 400);

  noStroke();

  fill(40,245,200);

}

​

function draw() {

  background(200,150,245);

​

  // distance between squares

  let jump = 40;

  // two for loops are needed to make a grid of squares

  // the outer loop controls how many rows are made

  // the inner loop controls how many columns are made

  for (let y = 0; y < 10; y++) {

    for (let x = 0; x < 10; x++) {

      rect(x * jump + 10, y * jump + 10, 20, 20);

    }

  }

}