.fullscreen {
  position: fixed !important;
  top: 0;
  left: 0;
  width: 100vw !important;
  height: 100vh !important;
  z-index: 9999;
  background-color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.fullscreen canvas {
  max-width: 100%;
  max-height: 100%;
  height: auto !important;
  width: auto !important;
}