body {
    margin: 0;
    padding: 0;
    color: rgba(255, 255, 255, 0.87);
    background-color: #000000;
}

#app {
    width: 100%;
    height: 100vh;
    overflow: hidden;
    position: relative;
}

#game-container {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

#cover-container {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}