:not(:defined) > * {
  display: none;
}

html {
  height: 100%;
}

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

model-viewer {
  width: 100%;
  height: 90%;
  background-image: linear-gradient(to bottom, #346698, #DEE8F1);
}