text: let x;
  let x1;
  let y;
  let dia = 30;
  
  function setup() {
    createCanvas(520, 280);
    x = -dia;
    x1 = 0;
    y = height/2;
  }
  
  function draw() {
    background(25, 25, 112);
    fill(255, 212, 121);
    ellipse(x, y, dia);
    x += 1;
    x1 += .005;
    y = map(sin(x1), -1, 1, dia/2, height - dia/2);
    
    if (x >= width + dia) {
      x = -dia;
    }
  }