.canvas {
  position: fixed;
  overflow: hidden;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0
}

.canvas canvas {
  position: absolute;
  top: 0;
  left: 0
}

.canvas.canvas-matrix canvas {
  width: 100%;
  height: 100%;
  object-fit: cover
}