html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: #000;
}

* {
  box-sizing: border-box;
}

#unity-container {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
}

#unity-canvas {
  display: block;
  width: 100%;
  height: 100%;
  background: #000;
}

#unity-loading-bar {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
  color: #fff;
  font-family: Arial, sans-serif;
}

#unity-progress-bar-empty {
  width: 141px;
  height: 18px;
  background: url("image/progress-bar-empty-dark.png") no-repeat center;
}

#unity-progress-bar-full {
  width: 0%;
  height: 18px;
  background: url("image/progress-bar-full-dark.png") no-repeat left center;
}