html, body {
  margin: 0;
  overflow: hidden;
  display: block;
  justify-content: center;
  align-items: center;
  height: 100vh;
  max-height:100%;
  background: #fff;
}

canvas {
  display: block;
  max-width: 100vw;
  max-height: 100vh;
  background: linear-gradient(to bottom,  rgb(59,150,198) 0%,rgb(89,197,204) 57%);
  overflow: hidden;
}