html {
    -ms-touch-action: none;
    /* adapt to horizontal and vertical screens */
    width: 100% !important;
    height: 100% !important;
  }
  
  body, canvas, div {
    display: block;
    outline: none;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  
    user-select: none;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    -khtml-user-select: none;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  }
  
  /* Remove spin of input type number */
  input::-webkit-outer-spin-button,
  input::-webkit-inner-spin-button {
    /* display: none; <- Crashes Chrome on hover */
    -webkit-appearance: none;
    margin: 0; /* <-- Apparently some margin are still there even though it's hidden */
  }
  
  body {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 0;
    border: 0;
    margin: 0;
  
    cursor: default;
    color: #888;
    background-color: #000;
  
    text-align: center;
    font-family: Helvetica, Verdana, Arial, sans-serif;
  
    display: flex;
    flex-direction: column;
    
    /* fix bug: https://github.com/cocos-creator/2d-tasks/issues/791 */
    /* overflow cannot be applied in Cocos2dGameContainer, 
    otherwise child elements will be hidden when Cocos2dGameContainer rotated 90 deg */
    overflow: hidden;
  }
  
  #Cocos2dGameContainer {
    position: absolute;
    margin: 0;
    left: 0px;
    top: 0px;
  
    display: -webkit-box;
    -webkit-box-orient: horizontal;
    -webkit-box-align: center;
    -webkit-box-pack: center;
  }
  
  canvas {
    position: absolute;
    margin: auto;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0);
  }
  
  a:link, a:visited {
    color: #666;
  }
  
  a:active, a:hover {
    color: #666;
  }
  
  p.header {
    font-size: small;
  }
  
  p.footer {
    font-size: x-small;
  }
  
  #splash {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* background-image: url(splash.jpg); */
    background-position: center center;
    background-size: cover;
  }
  
  @media (orientation: portrait) {
    #landscape #splash {
      position: absolute;
      top: 50%;
      left: 50%;
      width: var(--screen-height, 100vh);
      height: var(--screen-width, 100vw);
      transform: translate(-50%, -50%) rotate(90deg);
      transform-origin: center center;
      overflow: hidden;
    }
  }
  
  @media (orientation: landscape) {
    #portrait #splash {
      position: absolute;
      top: 50%;
      left: 50%;
      width: var(--screen-height, 100vh);
      height: var(--screen-width, 100vw);
      transform: translate(-50%, -50%) rotate(90deg);
      transform-origin: center center;
      overflow: hidden;
    }
  }
  
  #donut {
      position: absolute;
      margin: auto;
      top: 0;
      bottom: 0;
      left: 0;
      right: 0;
      display: inline-block;
      width: 40px;
      height: 40px;
      background-image: url(donut.982c3.png);
      background-size: 100%;
      animation: donut-spin 1.2s linear infinite;
  }
  
  @keyframes donut-spin {
    0% {
      transform: rotate(0deg);
    }
  
    100% {
      transform: rotate(360deg);
    }
  }
  
  #progress {
    position: absolute;
    margin: auto;
    top: 55%;
    bottom: 0;
    left: 0;
    right: 0;
    font-size: 20px;
    color: #ffffff;
    text-align: center;
    padding: 10px 20px;
    border-radius: 5px;
  }