body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  background: rgb(245, 245, 245);
  font-family: Arial, sans-serif;
}

#defaultCanvas0 {
  width: 90vh !important;
  height: 90vh !important;
  max-width: 90vw;
  max-height: 90vw;
  box-shadow: 10px 10px 12px -2px rgba(0, 0, 0, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  border: 8px solid #ccc;
}

@media (max-width: 768px) {
  #defaultCanvas0 {
    width: 85vh !important;
    height: 85vh !important;
    max-width: 85vw;
    max-height: 85vw;
  }
}