html,
body {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background-color: #ffffff;
  align-items: center;
  justify-content: center;
  color: white;
}

body {
  flex-direction: row;
  overflow: hidden;
  touch-action: none;
  overscroll-behavior-y: contain;
}

canvas {
  display: block;
  cursor: crosshair;
}