id black; }
      /* the canvas *must not* have any border or padding, or mouse coords will be wrong */
      canvas.emscripten { border: 0 none; background-color: black; }

      #emscripten_logo {
        display: inline-block;
        margin: 0;
      }

      .spinner {
        height: 30px;
        width: 30px;
        margin: 0;
        margin-top: 20px;
        margin-left: 20px;
        display: inline-block;
        vertical-align: top;

        -webkit-animation: rotation .8s linear infinite;
    