body {
    background-color: #ffffff;
    margin: 0;
    overflow: hidden;
  }

  #css, #webgl {
      width: 100%;
      height: 100%;
      position: absolute;
      top: 0; left: 0;
  }

  #css {
    background: transparent;
  }

  #css div div {
    pointer-events: auto !important;
  }

  #overlay {
    position: absolute;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: auto;
    z-index: 2;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgb(0, 0, 0);
    transition: 1s opacity;
  }

  #overlay iframe {
    border: none;
    pointer-events: none;
  }

  #overlay h2 {
    font-size: 24px;
    text-align: center;
    color: rgb(255,255,255);;
  }

  #overlay button {
    border: 2px solid rgb(255,255,255);
    padding: 8px 16px;
    font-size: 16px;
    border-radius: 8px;
    transition: 0,1s transform;
  }

  #overlay button:hover {
    border: 2px solid rgb(179, 20, 20);
  }

  #overlay button:focus {
    transform: scale(0.95);
    border: 2px solid rgb(179, 20, 20);
    outline: none;
  }

  #loading-screen {
    position: absolute;
    z-index: 3;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000000;
    opacity: 1;
    transition: 1s opacity;
  }

  #loading-screen.fade-out {
      opacity: 0;
  }

  #loader {
      display: block;
      position: relative;
      left: 50%;
      top: 50%;
      width: 150px;
      height: 150px;
      margin: -75px 0 0 -75px;
      border-radius: 50%;
      border: 3px solid transparent;
      border-top-color: #9370DB;
      -webkit-animation: spin 2s linear infinite;
      animation: spin 2s linear infinite;
  }
  #loader:before {
      content: "";
      position: absolute;
      top: 5px;
      left: 5px;
      right: 5px;
      bottom: 5px;
      border-radius: 50%;
      border: 3px solid transparent;
      border-top-color: #BA55D3;
      -webkit-animation: spin 3s linear infinite;
      animation: spin 3s linear infinite;
  }
  #loader:after {
      content: "";
      position: absolute;
      top: 15px;
      left: 15px;
      right: 15px;
      bottom: 15px;
      border-radius: 50%;
      border: 3px solid transparent;
      border-top-color: #FF00FF;
      -webkit-animation: spin 1.5s linear infinite;
      animation: spin 1.5s linear infinite;
  }
  @-webkit-keyframes spin {
      0%   {
          -webkit-transform: rotate(0deg);
          -ms-transform: rotate(0deg);
          transform: rotate(0deg);
      }
      100% {
          -webkit-transform: rotate(360deg);
          -ms-transform: rotate(360deg);
          transform: rotate(360deg);
      }
  }
  @keyframes spin {
      0%   {
          -webkit-transform: rotate(0deg);
          -ms-transform: rotate(0deg);
          transform: rotate(0deg);
      }
      100% {
          -webkit-transform: rotate(360deg);
          -ms-transform: rotate(360deg);
          transform: rotate(360deg);
      }
  }