#logo {
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-right: -50%;
    max-width: 90%;
    transform: translate(-50%, -50%)
}

   #spin {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, .3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    -webkit-animation: spin 1s ease-in-out infinite;
    position: absolute;
    top: calc(100vh - 100px);;
    left: calc(100vw/2 - 20px);
  }

  #loading{
    position:fixed;bottom:30px;width:100%;
    text-align: center;
    font-size: 18px;
    color: white;
  }
  #loadingplus{
    position:fixed;bottom:10px;width:100%;
    text-align: center;
    font-size: 18px;
    color: white;
  }
  @keyframes spin {
    to {
      -webkit-transform: rotate(360deg);
    }
  }
  @-webkit-keyframes spin {
    to {
      -webkit-transform: rotate(360deg);
    }
  }