canvas {
    display: block;
    background-color: rgba(36, 36, 36, 1);
    padding: 10px;
    border-radius: 10px;
  }

/* #canvasHolder {
    padding: 20px;
    margin-top: 15%;
    margin-left: 15%;
} */

#canvasHolder{
  width: 350px;
}