* {
  margin:0;
  padding:0;
}
body {
  position: relative;
  background: #000;
}
canvas{
  width:960px;
  height:960px;
  margin-left:-480px;
  left:50%;
  top:1px;
  position: absolute;
  background-color: #000000;
  transform-origin: 50% 0;
}