body {
  overflow:hidden;
  background-color: white;
  justify-content: center;
  object-fit: contain;
  margin:0;
  padding:0;
  width:100vw;
  height:100vh;
 
}
canvas {
  max-width: 100%;
  max-height: 100%;
  bottom: 0;
  left: 0;
  right: 0;
  top: 0;
  display:block;
  object-fit: contain;
  margin: auto;
  overflow: auto;
  position: fixed;
}