:root {
  --back_color: #ffffff;
  --front_color: #ffffff;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;

  background-color: var(--back_color);
  background-image: var(--front_color);
}

@media screen and (orientation: landscape) {
  canvas {
    max-height: 100vh !important;
    width: auto !important;
  }
}
@media screen and (orientation: portrait) {
  canvas {
    max-width: 100vw !important;
    height: auto !important;
  }
}