let lineweight;
        let xposition;
        let yposition;

        function setup() {
          canvas = createCanvas(windowWidth, windowHeight);
          canvas.position(0, 0);
          canvas.style('z-index', '-1');
          background(255, 255, 255);

          lineweight = random(20);
        }

        function draw() {
          frameRate(1);

          xposition = random(lineweight/2, windowWidth - (lineweight/2));
          yposition = random(lineweight/2, windowHeight - (lineweight/2));
          stroke(0);
          strokeWeight(lineweight);
          let n = random(0, 1);
          if (n < 0.5) {
            line(xposition, 0, xposition, windowHeight);
          } else {
            line(0, yposition, windowWidth, yposition);
          }
        }

        function saveImage() {
         saveCanvas('RandomGrid', 'jpg');
        }