html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: #b37dfe;
}

body {
  position: relative;
}

#game-shell {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#canvas {
  display: block;
  width: 800px;
  height: 600px;
  max-width: 100%;
  max-height: 100%;
  background: #b37dfe;
  visibility: hidden;
}

#load-percent {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-family: Arial, sans-serif;
  font-size: 16px;
  color: #fff;
  white-space: nowrap;
  pointer-events: none;
}