body {
  margin: 0;
}

main {
  height: 100vh;
  width: 100vw;

  display: flex;
  align-items: center;
  justify-content: center;
}

#defaultCanvas0 {
  max-width: 100vw;
  max-height: 100vh;
  width: auto;
  height: auto;
  object-fit: contain;
}