html, body {
  margin: 0;
  padding: 0;
}
canvas {
  display: block;
}

html,body {
    padding: 0;
    margin: 0;
    background-color: rgb(59, 184, 172);
    /*
    background-image: url("bg.jpg");
    */
}
canvas {
    padding-left: 0;
    padding-right: 0;
    margin-left: auto;
    margin-right: auto;
    display: block;
}