html {
    box-sizing: border-box;
  }
  *, *:before, *:after {
    box-sizing: inherit;
  }
  body {
    margin: 0;
  }
  #gameContainer {
    width: 100%;
    height: 100%;
    align-content: center;
    justify-content: center;
  }

  /* try to handle mobile dialog */
  canvas + * {
    z-index: 2;
  }
  .logo {
      display: block;
      max-width: 100vw;
      max-height: 70vh;
  }

  .progress {
      margin: 1.5em;
      border: 1px solid white;
      width: 50vw;
      display: none;
  }
  .progress .full {
      margin: 2px;
      background: white;
      height: 1em;
      transform-origin: top left;
  }

  #loader {
    position: absolute;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  .spinner,
  .spinner:after {
    border-radius: 50%;
    width: 5em;
    height: 5em;
  }
  .spinner {
    margin: 10px;
    font-size: 10px;
    position: relative;
    text-indent: -9999em;
    border-top: 1.1em solid rgba(255, 255, 255, 0.2);
    border-right: 1.1em solid rgba(255, 255, 255, 0.2);
    border-bottom: 1.1em solid rgba(255, 255, 255, 0.2);
    border-left: 1.1em solid #ffffff;
    transform: translateZ(0);
    animation: spinner-spin 1.1s infinite linear;
  }
  @keyframes spinner-spin {
    0% {
      transform: rotate(0deg);
    }
    100% {
      transform: rotate(360deg);
    }
  }