#ball {
  visibility: hidden;
}

html, body {
  margin: 0;
  padding: 0;
  font-family:"sans","sans-serif";
  background-color: #000000;
}
canvas {
    padding-left: 0;
    padding-right: 0;
    margin-left: auto;
    margin-right: auto;
    display: block;
    width: 800px;
}
div.centered{
	text-align:center;
  color: #fefefe;
}