html, body {
  width: 100%;
  height: 100%;
  padding: 0;
  margin: 0;
}

body {
  margin: 0;
  padding: 0;
  display: block;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background-color: #222035;
  object-fit: contain;
}
canvas {
  max-width: 100%;
  max-height: 100%;
  bottom: 0;
  left: 0;
  margin: auto;
  overflow: auto;
  position: fixed;
  right: 0;
  top: 0;
  object-fit: contain;
}