body {
  width:99%;
  text-align: center;
}

#canvas {
  margin-left:auto;
  margin-right:auto;
}

#controls ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

#controls ul li {
  display:inline-block;
  padding: 10px;
  font-family: Arial, Helvetica, sans-serif, sans;
}