html, body, main {
  margin: 0;
  padding: 0;
  display:flex;
  width:100%;
  height:100vh;
  margin:0;
  padding:0;
  justify-content:center;
  align-items:center;
  
}
canvas {
    
  max-width: 100vw;
  max-height: 100vh;
  width:100%!important;
  height:auto!important;

}