html,
body {
  margin: 0;
  padding: 0;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  display: flex;
  overflow: hidden;
  height: 100vh;
  align-items: center;
  justify-content: center;
  background-color: #000;
}

#defaultCanvas0 {
  display: block;
  max-width: 100vw !important;
  max-height: 100vh !important;
  bottom: 0;
  left: 0;
  right: 0;
  top: 0;
  object-fit: contain;
}